WeMakeItLab

GPT by Category

Multi-template version. Pick your business model and fill in the cost structure: each model has its own way of getting to the true CPA.

Step 1 | Cost structure

Ecommerce (physical product)

Direct online sales with margin on a physical product. GPT = Gross margin (effective price − COGS − shipping − other) − true CPA.

CategoryList price ($)% Cash/transfer discount% COGS (merchandise)% Shipping/fulfillment% Other costs (payment processing, etc.)
Step 2 | Actual Meta Ads / business data

Spend and actual results by category

Fill in directly from Ads Manager and from your CRM/closed-sales records for the period being audited.

CategoryAd spend for the period ($)PurchasesTrue CPA (auto)
Category A$0
Category B$0
Results

GPT (Gross Profit per Transaction) by category

GPT = Net Effective price − true CPA. Traffic light: GPT ≥ 15% of the reference | GPT positive but below 15% | GPT negative.

CategoryEffective priceNet margin/profitTrue CPAGPT $GPT %Traffic light
Category A$0$0$0$00%Red - loss
Category B$0$0$0$00%Red - loss
Simple average GPT
$0
Average across categories, not weighted by volume
Volume-weighted GPT
- no data
Enter the business data above to enable it
Most profitable category
Category A
GPT 0%
Highest-risk category
Category A
GPT 0%
We make it Lab | Multi-template version | Data is not saved — export the JSON before closing.
Source / methodology: 4Pi & GPT framework, Professor Charley T.
GPT Calculator — Gross Profit per Transaction | We make it Lab