Retail AI cost and ROI: separate support, marketing and inventory accounts

Separate retail AI benefits by task. Support preparation, product content or marketing, and inventory-related decisions have different data, units and owners. Hours, revenue and inventory balances cannot be added directly.

Agree one horizon, currency and baseline, then obtain project-specific costs and benefits. Retain quote dates, scope, usage, exclusions and support, including internal effort.

Build the complete cost account

AWS's per-request cost method tracks tokens, models and tool-call cycles. Borrow the measurement method rather than its prices or outcomes. Estimate peak and retry costs from actual usage, alongside staffing and integration.

Keep three benefit accounts distinct

Support: define accepted completion through supported correctness, allowed use and rework conditions. Draft assistance differs from autonomous resolution. Estimate capacity through complete human effort in both flows, then inspect staffing, overtime, outsourcing or other actual expenses. Case counts do not establish staff removal.

Marketing: define an intervention and comparison. Content preparation can release time; purchasing effects require attributable incremental profit, offers, returns and costs. For before/after observation, retain seasonality, audience and other activity changes. Report-attributed revenue alone does not establish incrementality.

Inventory: distinguish the monetary reduction in inventory balance from annual holding or financing value. With an agreed annual financing-cost rate:

Annual financing value estimate = attributable average inventory-value difference × agreed annual rate

This estimates annual value rather than principal released. Whether lower inventory becomes cash depends on purchasing, sales and payments, not forecast scores alone. Finance determines treatment of principal, expenses, losses and financing value, avoiding recurring annual credit for principal or counting one expense twice.

Align ROI and model cash payback separately

For a positive same-horizon total-cost denominator, period ROI can mean compatible monetary benefits less total costs, divided by total costs. Align periods and valuation basis. Report cash and non-cash results separately, and name alternative denominator conventions explicitly.

The UK Government Efficiency Framework offers distinctions among spending, non-cash productivity, gross benefit and added costs, not Taiwan accounting rules. The GAO cost guide supports scope, assumptions, risk and actual-cost records.

Payback requires period-by-period cash flow rather than inference from annual ROI. Benefit owners update accepted work, quality, full costs and valuation; finance checks overlap and scenarios before the next decision.

Read personalization audiences, clicks and incremental value for measurement, or the existing retail solution for approved content, support and data-use scope.