Some paths have gaps.
Don't draw them in.
A paying customer may arrive through a post, return directly and buy later. First-touch and last-touch answer different questions. Neither proves the post caused the purchase.
No fingerprinting in the concept. Missing consent, deleted identifiers and cross-device visits become unknowns. Refunds would reduce attributed revenue; a payment is not automatically profit.
Pin your setup note.
Paidpath's fictional $19/month starter plan would link consented web events to payment events for one site. This page only prepares an implementation note. It connects to neither a site nor a payment provider.