Well surely some deals are pretty good, can't argue about that. HOWEVER. There's a couple of things that needs to be said:
1. Most of the companies selling the items are Asian hence most the sizes of clothing will be Asian sized unless specified otherwise. Things like for example cords may also not work if you live in an European country or something like that. Always read everything there is to know about the product before buying. Not just what the preferred seller has written about it, but also what other sellers and websites have written about the same product.
2. The different sellers ARE DIFFERENT SELLERS. Wish is just like the town square and all the sellers have their own stall with products. Some are good, some are not. Some can be trusted, some will screw you over. I don't think the app provides sufficient information about the seller in order to make good judgement.
3. I noticed that shipping isn't really mentioned until you've put it in your shopping basket and headed for check out. Like to see what the shipping fee is you have to scroll down and click for the information to show. Also when in the shopping basket the text regarding shipping is small and gray so you won't think about it too much. When you calculate what the product and shipping is together it usually isn't as cheap as you'd hoped for and you could find the same product for cheaper (shipping free or included) on the similar concept site eBay which actually shows the shipping costs clearly.
4. Another thing i prefer about eBay is that the prices don't fluctuate like on Wish. On eBay once the seller has listed an item, the listing will remain the same (until it ends or they take it down) but with Wish i noticed that items i had saved because i thought the prices were the best on that specific product later would have risen with 1-5 dollars which of course turned me off from buying. Only the cheapest of the cheap for this cheap ass.
5. Now this ones understandable, and can easily be overlooked. I don't exactly appreciate it though: cheap selling tactics. Things like ''buy within an hour and get it half a dollar cheaper!'' with a menacing timer. Though the point system is fairly neat i guess.