Most people will opt to buy the less expensive one every few years, either for economic reasons, or because they feel that it is a better deal to replace the $400 fridge every five years than to pay thirty times the price for a high-end/professional unit.

Unless they live to be 170+ (assuming they're 20 when they buy their own fridge) the $400 one every 5 years is definitely a better deal than one that lasts a lifetime and costs 30x as much.