Write down quote expiry, stock reservation rules, refund wording, and what happens if a customer pays after a batch sells out. Mining inventory can move quickly, so the payment rules need to be plain.
For hosted mining, separate hardware, first-month hosting, security deposit, electricity, setup, and repair charges when those amounts matter. Clear line items reduce support tickets later.
Reference every payment
Use order IDs, invoice numbers, hosting contract IDs, miner IDs, or repair tickets.
Decide who releases stock
Sales, finance, fulfillment, and hosting operations should know who acts after paid status.
Keep customer wording simple
Explain the amount, supported assets, expiry, and next step before the buyer sends funds.