1) If that information appears on the listing, it is your responsibility to understand what that means. Mark your calendar at Day 35 to remind yourself to be watching for it. You have up to 45 days to file an Item Not Received dispute.
2) Unlikely? Have you ever worked in retail or in a warehouse? You are not dealing with a mom and pop business who order items ten at a time.
3) Ever shopped at a Dollar Store? Owners will carry whatever they can buy and sell. Don't expect to return to a Dollar Store a month later and find the same items or even type of items available. Exception-- see #2 above.
4) Well, yeah. Chinese sellers are notorious for shipping counterfeit and knockoff goods. There is a thread somewhere on these boards by a guy whose cheap thumb drive, sold as 16 gigs, turned out to be only 4 gigs. But at least, it did work as a 4 gig. Clothing from China tends to be cut small and made from poor quality fabric.
4a) Many sellers sell a strange variety of goods. I sell, on another ID, books. My titles run heavily to science fiction, but I have a strong admixture of Christian and gay literature. Plus dress patterns. I've seen car parts and children's DVDs in the same store.
Further, the seller's feedback, even for a completely different line, should guide you as to whether they are likely to provide what they sold.
Relax. It may be fine. Mark your calendar.
EBay and Paypal offer strong Buyer Protection.
And in future, read the listing carefully BEFORE buying.
