What can y'all tell me about TEMU, the shopping site?

My cousin has been talking about how she was trying Temu out of curiosity. She placed an order for $20 worth of cheap stuff as a test and it arrived over the past couple of days, and she is satisfied with it. (They at least sent what she ordered and not a toy school bus.) I’ve also started getting ads for Temu on Facebook, which brought to my attention that I have been blisfully ignorant of my lacking in the glow-in-the-dark kodama department, so I had her put a set of 10 in her next order. (Amazon charges around $8 for 5 of them.)