The pain
The same SKU has four prices, three formats, and a different rule for every platform.
A single supplier update isn't one job — it's one job copied four times, each with its own rounding, fees, MAP floor, and column order. Most retailers do this in a stack of spreadsheets. By Sunday night, the website and Amazon don't agree.
SKU
Website
Amazon
In-store POS
HK-50.2STA
Harken 50.2STA Self-Tailing Winch · Cost $1,420
$1,902.00
× 1.34 · MAP floor
$2,016.00
× 1.42 · Buy Box +$5
$1,846.00
× 1.30 · counter
LW-V4-WCH
Lewmar V4 Windlass · Cost $2,180 · MAP $2,725
$2,725.00
× 1.34 → held at MAP
$2,895.00
× 1.42 · ASIN B07X4...
$2,725.00
× 1.30 → held at MAP
RNS-RF40-A
Ronstan Series 40 Mainsheet Block · Cost $186
$249.95
× 1.34 · round to .95
$264.99
× 1.42 · fee buffer
$241.80
× 1.30 · counter
Excerpt from a real PriceTool run report. Three SKUs shown — the engine produced 1,284 of these, with MAP, MSRP, ASIN mapping, and rounding applied per channel, in a single pass.