Fake serial number, wrong amount of grooves, poor quality, very low price, no official packaging. It came in an envelope as if it were a letter. Serial starts with 020. Bought it for around $3.00. On Amazon it said it was from Iain Sinclair, not a third party seller. Here is the link:

http://www.amazon.com/Iain-Sinclair-Cardsharp2-Authentic-Folding/dp/B008QB68R4/ref=zg_bs_553232_1