I submitted 30 calculators, TI-82s, I didn't look up reviews before I submitted and started to get a little worried after looking up reviews. So I emailed them about 10 days after sending them as I hadn't heard anything. They promptly emailed back saying they had received my calculators and were processing my shipment. I then waited until 8/30/11 and had not received anything back from them or a payment. I emailed them again that day saying I needed to get a response or payment. Today I received my payment for exactly how I had graded the calculators. It took a little longer than they advertise but I was paid exactly what I was suppose to get paid. I don't work for them... or an affiliate. In my email I told them I would review my experience, good or bad, based on my actual events. I gave them 4/5 stars only because it took longer than advertised and I had to email them twice. I told them they need to keep w/their own guidelines or change them on their website because it makes people frustrated when you are much slower than promised.