When my daughter was young and growing like a weed, I used to hit up Kid to Kid and other preloved children's clothing stores. Now that she's school age and clothes matter more, I frequent Children's Place for their great sales. Kid to Kid was always one of my favorite used kids clothes stores as they had a decent selection for a great price. They also have toys, baby gear, and other necessities like hats and shoes. I never sold anything back as we're big on donating but I hear that can frustrate people who are trying to recycle their clothes for more clothes. In general though, the store is neat and easy to shop. They also have great quality stuff, which is probably makes them so picky with their buy-backs.
I've never sold anything there, but I go often to look for things like Duplo's, wooden toys, and used books. Sometimes you can score something great. Today, they had a Halloween Costume sell, i'd been waiting weeks for this sale. I showed up early, and was able to score a $49 Pottery Barn Kids costume for only $6.99! I never want to pay full price for costumes again. I don't buy clothes for my daughter there, because we like to buy things such as Tea Collection, Janie and Jack, Hanna Andersson and it's rare that I stumble upon that there. But they are great for picking up pj's at a reasonable price and again, wooden toys. I have and will continue to recommend them to my friends!
I always love going to Kid-to-Kid Gilbert. They offer fair prices for my gently used kids' gear. From onsies to shoes to toys, getting money for items my kids will never use again is great; even if it is just to be used right then to buy new stuff! I can never seem to get out of the store without purchasing at least 1 item. (My 5 year old LOVES the bows) The staff is always so friendly and helpful when I go in as well. The play area has also been a help! It keeps my kids' entertained while I can have a second to shop for them. So I guess what I'm trying to say is keep up the great work!