Two things. 1) the items I have purchased on this site have been great, quality and value wise. I have no complaints. 2) sending in items is resulting in less and less payout. The company recently changed the policy to not accept clothing that they can't at least list for $6.49. That seems alot for a lot of childrens brands for used clothes anyway. They have made updates such as pay $10 to get the items returned to you that are not accepted and taking pictures of the rejected items so I wouldn't call it a scam that they are stealing all your clothes if they don't accept them like some people think.
Overall, great for buying and just ok for sending items too. Honestly, I was just donating clothing, so even getting $10 for a bag of clothes from thredup is fine with me. If you are looking for bigger payouts do local consignment since keep in mind, thredup pays for the shipping and has employees processing everything which brings down what they can pay you while not going bankrupt.