I used Cash4calcs.com and sent in my ti-83 plus calc. The day after i sent it in i decided to browse other websites and saw that Cash4Calcs ratings werent that good but they did leave a customer service number so i called. Every single time i called they answered over one stupid calculator and Peter was helpful. Sent in my stuff in the mailbox on March the 15th and got payment by the 31st. NICE DOING BUSINESS BUT A BIT SLOW
PS) I SHOULD POINT OUT THAT I GOT 6 bucks less than expected so yea lol they mite grade your calculator in good condition when you think its in mint so yea