Sellhelm vs a Spreadsheet: What Actually Changes

Why a spreadsheet is a genuinely good place to start

Checked 26 September 2026: our own piece on the two spreadsheets worth building before you list anything recommends exactly this approach for a new, small shop - a pricing sheet and a supplier log, built in genuinely free software, covering the two most common early mistakes without any new cost or dependency. This isn't a piece walking that back. A spreadsheet is a real, sound tool, and for a shop with a handful of products checked once a week, it does the job completely adequately. What this piece covers is what actually changes once that same discipline is applied to a catalogue considerably larger than the one it was originally built for.

What a spreadsheet actually requires, made explicit

A spreadsheet-based system, kept properly, requires a person to do several specific things by hand, every single time it's checked: open each supplier's page individually, read the current price and stock status, compare it against what was last recorded, update the row if something has changed, and then separately go to eBay and update the live listing to match. None of this is difficult in isolation - it's the same handful of small, simple actions repeated once per product, every single check. The genuine cost is not the difficulty of any one step; it's the same steps repeated hundreds of times, every week, for as long as the shop keeps running.

What Sellhelm actually automates, specifically

Sellhelm's core job is doing exactly the manual steps above without a person doing them by hand: reading a supplier's real, current price and stock automatically, on a schedule, and reflecting a genuine change into the eBay listing - or, for a price change large enough to look unusual, holding it in a queue for a person to actually check first, rather than pushing it through unattended. This is not a different task to what a spreadsheet-and-manual-checking system does - it is the identical task, with the actual checking work removed from a person's own time and handed to software running continuously in the background.

The honest time cost, scaled up

A spreadsheet checked weekly for 30 products, at perhaps two minutes per product to check and update, takes roughly an hour a week - a genuinely manageable, minor task alongside everything else running a small shop involves. The identical discipline, applied honestly to 500 products at the same two minutes each, takes over sixteen hours a week - not a minor task any more, but close to a part-time job's worth of hours spent purely on checking, before a single buyer message has been answered or a single order has been dispatched. This is the real, honest crossover this piece is built around: the manual approach does not become impossible at some specific number, it becomes a genuinely large, ongoing cost in time that grows in direct, linear proportion to how large and successful the shop becomes.

The specific kind of mistake manual checking makes more likely

Beyond the raw time cost, a purely manual process run at real volume has a second, quieter cost: human error becomes more likely, not less, the more repetitive and tedious a task becomes. A person checking the same handful of numbers hundreds of times a week, week after week, is genuinely more likely to miss a real change - a price that moved, a stock level that ran out - simply from the fatigue of repetition, than a piece of software checking the same numbers the same way every single time without ever getting tired of the task. Our piece on the two spreadsheets worth building first already covers why a supplier log's real value comes from consistent, undramatic checking rather than occasional, motivated bursts of attention - the exact discipline that gets harder to sustain by hand as volume grows, and easier to sustain once it no longer depends on a person's own attention holding up every single week indefinitely.

What a spreadsheet has no equivalent for: a review step before anything goes live

A further, distinct difference is not about checking a supplier at all - it's about what happens once a change is actually detected. A spreadsheet has no equivalent to Sellhelm's drafts queue, covered in our piece on what a drafts review step actually catches before you list - a specific, deliberate pause before a detected change actually reaches the live eBay listing, giving a person one last chance to catch something that looks wrong before a buyer ever sees it. A manual, spreadsheet-only process either updates eBay by hand at the same moment the spreadsheet is updated - with no separate safety check at all - or updates the spreadsheet and leaves eBay to fall out of sync until the next manual pass catches the gap, whichever happens first.

When a spreadsheet genuinely remains the right answer

None of the above is a claim that every shop needs paid software from day one. A shop with a handful of products, checked by an owner who genuinely enjoys the process and has the time for it, sourced from one or two suppliers checked weekly without difficulty, is being served perfectly well by a spreadsheet - there's no real cost being incurred that switching to software would meaningfully improve. The honest crossover point, worth watching for rather than guessed at, is when the weekly checking time itself starts crowding out other, more valuable uses of the same hours - messages left unanswered, new listings not written, an actual sale not chased - because checking the existing catalogue by hand has quietly become the largest single task in the week.

The real cost, put side by side honestly

A spreadsheet costs nothing beyond the time spent using it - a genuine, real zero-pound cost for the software itself, worth stating plainly rather than glossed over. Sellhelm's Solo licence costs £99, once. The honest comparison is not "free versus £99," treated as if that settles it - it's the value of the time a spreadsheet-and-manual-checking system genuinely costs, at whatever a seller's own time is actually worth to them, set against a one-time £99 that removes the bulk of that specific, repetitive checking task permanently. For a shop where that manual time has grown to several hours a week, the £99 is very often recovered within the very first month, purely in time that is no longer being spent on the same repetitive checking.

A specific, genuine risk spreadsheets carry that software doesn't

Beyond the raw time cost, a spreadsheet built and maintained by one person over months tends to accumulate a quieter, structural risk: formulas that drift out of sync as rows are added, copied or edited, a single broken reference silently producing a wrong number in one row that goes unnoticed because the rest of the sheet still looks fine. A well-built spreadsheet, checked carefully, avoids this - but "checked carefully" is itself more manual attention layered on top of the checking already covered above, and the larger a sheet grows, the harder that additional layer of care becomes to sustain consistently. Purpose-built software has no equivalent version of this specific risk, since the calculation logic is fixed and tested once, applied identically to every row rather than copied and potentially altered by hand row by row.

What a spreadsheet was never built to do at all

Beyond the specific checking task this piece has focused on, a spreadsheet has no equivalent for several other things a shop genuinely needs done. It doesn't write an eBay listing, format photos into a template, calculate the eBay price that delivers a chosen return after every fee, track VAT and profit as orders come in, or hold a buyer's live delivery address without a seller needing to look it up manually on eBay each time. None of these were ever spreadsheet problems to begin with - they are separate tasks a seller using a purely spreadsheet-based system is still doing entirely by hand, or through some other, separate tool, alongside the spreadsheet itself.

What actually happens the week a shop switches

A seller moving from a spreadsheet to software rarely needs to abandon the spreadsheet's own discipline - the underlying habit of checking suppliers regularly, covered in our two-spreadsheets piece, stays exactly as valuable as it always was. What changes is who, or what, is actually doing the checking each week. The first week typically involves connecting each supplier shop once, letting the software read current prices and stock for the first time, and comparing that initial read against what the spreadsheet already showed - a useful, one-off sense-check in its own right, since any real discrepancy between the two shows up immediately. From the second week onward, the checking itself simply stops being a task a person does by hand.

A worked example

A seller running 350 listings, checking each supplier weekly by hand at roughly ninety seconds per product, spends close to nine hours a week purely on checking - more than a full working day, every single week, indefinitely, for as long as the catalogue stays that size or grows further. Switching that specific task to automatic watching removes the bulk of those nine hours, leaving only the occasional held, unusual change actually worth a person's direct attention - typically a small fraction of the original checking time. Valued at even a modest hourly rate, the time saved in the very first month alone comfortably exceeds the one-time cost of the software that replaced it, with every following month adding to that same saving at no further cost.

Questions people ask