I find “on, say, Amazon” entertaining. Amazon may well be the worst largeish US online vendor. It’s gotten to the point where I trust eBay more.
If you want winter gear, buy from one of several excellent online stores dedicated to it.
Absolutely! I recently bought a simple item, a roll of wiring loom tape. It was on Amazon and had a few reviews that stated that the received tape was old and didn't stick very well anymore.
Same item on eBay for cheaper has the seller specifically mentioning that they only sell fresh tape from the running production, not old stock. Even better, the seller specialized in these (and other) tapes.
It seems that eBay has just cultivated a much higher quality base of vendors. Many of them seem specialized.
I was actually thinking about my recent experience trying to buy a $5 Monoprice USB-PS/2 converter when I typed my original comment.