The free library — every exercise, every formula guide, every tool — stays free. Paid role packs are for people who need the same skills applied to their own job's numbers.
Checkout is open. One payment per pack, no subscription — grading, the workbook and every exercise in the pack unlock as soon as the payment clears.
Early bird
{price} per pack instead of {regular}, for the first {limit} packs — {remaining} left.
Quota, commission and pipeline maths, in one graded path.
$19 $19 Early bird 20 · What is in a pack
Twenty exercises built from the spreadsheets a sales team actually runs:
quota attainment per rep, region and segment
commission from a tier table, with the boundary case
pipeline forecast weighted by stage probability
win rate, average deal size and sales cycle length
top-N accounts and product-mix contribution
20 graded exercises in English, 简体中文 and 繁體中文
a .xlsx workbook with every sheet and its solutions
instant pass/fail in the browser, no install
All twenty are readable before you buy — the statement, the data and the hints are free. You pay for the grading, the official solutions and the workbook. A full run takes about 3–4 hours.
Reconciliation, aging and depreciation, with the rounding rules that matter.
$19 $19 Early bird 20 · What is in a pack
Twenty exercises built from month-end work:
bank reconciliation and duplicate payment detection
invoice aging buckets and AR turnover days
straight-line and declining-balance depreciation
VAT split from a gross amount, rounded the way finance rounds
prepaid amortisation and FX conversion from a dated rate table
20 graded exercises in English, 简体中文 and 繁體中文
a .xlsx workbook with every sheet and its solutions
instant pass/fail in the browser, no install
All twenty are readable before you buy — the statement, the data and the hints are free. You pay for the grading, the official solutions and the workbook. A full run takes about 3–4 hours.
FAQ
Do I need an account to buy a pack?
Yes. The purchase is tied to the email you sign in with, so you keep access across devices and we can restore it if a payment is refunded.
Is this a subscription?
No. Every pack is a one-time purchase: you pay once, and there is nothing to renew.
What happens to the free exercises?
Nothing changes. The free library stays free — every exercise, formula guide, tool and cheatsheet. Packs are new content, not moved free content.
Which languages are the packs in?
English, 简体中文 and 繁體中文 at launch. Japanese follows once a native reviewer has been through the free Japanese library.