Department-store plan, perhaps

• Purchase payment plan
• Retail purchase plan
• Reserve for Christmas, perhaps
• Set aside
• Purchasing option
• Purchase plan
• Payment plan

Wikipedia Word definitions in Wikipedia
Layaway ( lay-by in Australia, New Zealand) is an agreement in which the seller reserves an item for a consumer until the consumer completes all the payments necessary to pay for that item. Rather than taking the item home and then repaying the debt on ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ They entered the nearby Golden Nugget, ostensibly to put a rifle on layaway .