> They are not. With the one you buy at your local store, you get the two years warranty
And with the Temu one I get 250 units for the same price. I don't know how often you break a zipper, but 250x in two years sounds like a lot :-).
> should the thing contain, say, lead paint you can hold the seller accountable.
I understand what you are saying, but honestly I doubt they check every 10cm of every zipper for traces of lead (or other). If there is ever an issue, maybe (?) they will recall them somehow, but I probably won't ever know (say I paid cash, they don't have a way to contact me at all, and with a credit card I'm not sure if they can / will find my contact ever).
> But I'll need to wait about two days for shipping, whereas the local electronics store has it right now when I need it.
Sure! But the fact is that I'm absolutely fine waiting 2 days if it costs me 250x less. Actually with Temu it's more a few weeks, I would think? Still worth it for zippers.
If the zipper was sold for 1$ in the local store, that would be different. But 10$? At this point I just don't want the zipper at all. So in a way it's not really "Temu vs local store". If I don't get it on Temu, I don't get it at all.