Shopper's plan

• Certain payment plan
• Retail purchase plan
• Department-store plan, perhaps
• Department-store plan
• Buying plan with a down payment
• "Buy now, pay later" option
• Alternative to immediate purchase
• Reserve for Christmas, perhaps

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1961, as a system of payments for merchandise, from lay (v.) + away . Earlier in the same sense was Australian lay-by (1930).