eBay has their own separate usually NQAMBG policy, no matter how you pay
I have found very few Ali sellers still accept PayPal since the platform created Alipay.
Some vendors are still pretty good about refunds, but the Ali guarantee is nowhere nearly as slanted in favour of the buyer like both PayPal and eBay's.
The taobao, Tmall.com and 1688.com platforms are really a roll of the dice, but when stuff is irresistibly cheaper, test runs can really be worthwhile, if you don't mind the
shipping /
customs delays. Not to mention
google translate
For really light kit paying for expedited FedEx or DHL can even be worth it, but that often eliminates the
price delta compared to eBay.