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.

buy-product by QuacksO October 10, 2020

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.

Munchausen Buy Product by mutterhals July 14, 2009

byproductual 

Relating to, resulting from, or characteristic of a byproduct; occurring as a secondary or unintended result of a process.

LEDs on the other hand use electroluminescence, where electrons recombine with holes in a semiconductor, which as a result directly releases photons, without anywhere near the amount of byproductual heat

byproductual by Billy Boi Green August 24, 2025