buy-product
An undesirable "secondary" expense dat you get saddled with due to your having purchased an item.
Items like vehicles and paper-printers are excellent --- and notorious --- examples of frequently needing "buy-products"... the price of the items itself may be incidental when compared to all of the subsequent high-cost commodities that you will have to supply said item with in order to keep it operational, such as fuel, fluids, ink-jet cartridges, etc.
Munchausen Buy Product
A psychological afflication, frequently targeting older women, in which the afflicted subconsciously sabotage high price items in order to create an excuse to go shopping.
My mom has gone through 8 vacuums in the past year. She must have Munchausen Buy Product.