The price of 5 seems quite reasonable. Personally I wouldn't want to deal with returning them, like if they arrive and are warped.
then again some love returning stuff, there are people who buy clothes through amazon, wear them and then return them, cheaper than doing the laundry. next the stuff is sold in mixed lots at auctions and people buy the stuff in bulk , pay the auction price, put what they can back online.
Amazon supports this system of waste, because they gain market share and market share means everything if the desire is to create a monopoly, or something close to a monopoly.
I ordered a phone case and some stuff to stop a head gasket leak, tried to return it, they were so good, I can just throw it out, they dont even want it back. the loss is cost of business, they want a monopoly and a huge market share so the little stuff is part of satisfying customers, getting them addicted to online shopping.
Once a market share monopoly is created and the brick and market stores arent; competitors, then Amazon can stiffen those return policies. The modern electronic stocking is linked to giant electronic robotic warehouses so parts are pulled , and packaged and sent to the consumer with as little human intervention as possible.
I've been noticing more and more websites for services , parts suppliers , mobile phone companies etc, even government , removing their phone numbers and encouraging customers to go help themselves, so they dont have to pay for customer service.. If you deal with a small company that sells online you may have a totally different customer relationship, one where you can call them and have a problem fixed without being pushed towards a useless chatbot or stuck on hold to captively listen to repeating advertising slogans. I think AI will expand on all that. The chatbots will work better in the future, because of Ai tech. Im not sure I find that reassuring.