Aargh! I used this site several times in the past as they gave the best buy back price. Granted, the delay in payment is pretty bad (usually took about a month) but I always did receive payment for the grade I put on them. Also, they take TI-82s when no one else will give you jack. However, this last episode was pretty bad. I sent in two TI-83s in good condition and he graded them as poor and gave me about 1/2 of what I thought was fair. I would certainly recommend other sites if you can find a compareable price.