Six decisions from this quarter re-run with the numbers I actually have now: the maintenance bill per product, the price floor it implies, and the four claims I left out because I could not verify them.
My freeze date was 10 October — no new file ships after it. It held, the consolidation build went out, and now comes the only part of a plan that is worth anything afterwards: the list of decisions I would run differently. Six of them, with the arithmetic that changed my mind.
The shelf was already full, and I kept adding to it
I maintain twelve products. Six of them live in the same category: fee calculators, a bookkeeping workbook, a pricing calculator, a shop planner, an ads tracker, an income tracker. I built them one at a time, and each one felt like a small addition.
It is not small. I costed maintenance on a single workbook at 19.3 hours a year — re-verifying sourced facts, the January tax pass, editing and republishing, keeping a second format in step, support, and one unplanned break. Twelve products at that rate is roughly 230 hours a year, about five and a half full-time weeks, spent before anything new gets made.
What I would do differently: set a hard cap on the number of maintained files before building, and treat every new file as replacing something rather than joining it. October's build was a merge of six assets into one workbook. On my own ledger that gives back about 96 hours a year — five files I no longer have to keep true.
A wide shelf is not a spread of bets. It is a fixed annual bill that arrives whether or not any single file sells.
I would have dated every borrowed number on day one
My fee-and-profit workbook contains 34 figures or quoted rules that came from somewhere other than me. Retrofitting a "verified as of" date and a source link beside each one took a full working day. Writing them in as I authored each cell would have cost minutes.
And this matters because borrowed numbers rot. The 1099-K reporting threshold moved twice and now sits at more than $20,000 and more than 200 transactions, per the IRS in October 2025. A file still printing "$600" is not merely out of date — it is wrong in a way that could cost the reader money. Etsy charges payment processing on the item price plus shipping plus any sales tax Etsy collected, not on the item alone, which is how most cheap calculators model it. And a fee calculator with 70 reviews that is still selling today says on its own page that it was updated for April 2022 fee adjustments.
A dated cell with a source URL beside every rate is the cheapest credibility available, and I have not found anyone in this category doing it.
I would have priced from the maintenance bill, not from the market
I priced my workbook at $19 because $19 felt defensible next to a $4.96 competitor carrying 5,400 reviews. That is pricing off somebody else's cost structure.
Price it off your own ledger instead. Nineteen hours at $25 an hour is $483 a year for one product; at $40 an hour, $772. Selling from my own site, a $19 sale nets about $18.15 after processing, and a $49 sale nets about $47.28.
| Price | Net per sale | Units to cover $483 | Units to cover $772
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