A large ticket is not a bigger version of a small one. It changes the limit, the reserve, the funding schedule and what happens if the customer changes their mind.
AVS · CVV · 3-D Secure · Device
Manual Review Thresholds
Insured Shipment · Signature
Average ticket, highest ticket, how far ahead of delivery you take money, and what happens if the customer cancels. The gap between payment and delivery is the exposure — a deposit taken months before the work is months of chargeback risk the acquirer carries.
Bullion and fabricated jewelry rarely belong on the same rail, and the split is where the structure starts.