eBay has become my first stop for many categories of goods. It's not always the best choice, but it is often enough that it's worth checking. For example, both of my carbon monoxide detectors expired at the same time, and Amazon and local box stores wanted something like $70 each for replacements. On eBay I found the same model new in box for half of that from what I think was a fire system installation company.
Sellers are fleeing eBay in droves because eBay and PayPal always side with the customer, even in blatantly fraudulent cases.
More than half of the orders I've placed on eBay in the past year have been cancelled by eBay or PayPal because they detected fraud from the seller. I can't be bothered to keep wasting my time and money on a site that is hardly even a shadow of what it used to be.
Amazon suffers the same,but slightly different problems.
As such I've had no choice but to revert back to shopping in person, or in many cars simply skip out on purchasing things I could have readily found on eBay or Amazon five years ago for good prices without hassle. Somewhere eBay and Amazon have completely dropped the ball. I hope it effects their bottom line soon because the second hand stores near me are junk.