Someone I know made easier money by listing Amazon-available products on eBay and selling them there for higher prices. They didn't even need inventory, they just got them with Prime shipping after a purchase on eBay. People are stupid.
On eBay before buying stuff I always ask the seller if they can beat the Amazon price - 5% cashback that I get on Amazon, or deduct CA sales tax in their price if the product is available on B&H. If they can't beat that I buy on Amazon / B&H.
And Home Depot / Lowes. Every small tool I look for is cheaper there than on Amazon. Often by 1/3 or more. Same brand or better in most cases. And also with free shipping.
Isn't it great when somebody's ethics are seen as an arbitrage opportunity by somebody else? It's almost like that whole "voting with your wallet" idea is incorrect.
On eBay before buying stuff I always ask the seller if they can beat the Amazon price - 5% cashback that I get on Amazon, or deduct CA sales tax in their price if the product is available on B&H. If they can't beat that I buy on Amazon / B&H.