I looked on eBay today for a Pioneer CDJ-1000 Mk3, and over half the listings that came up were scams. Here are some things to watch out for when purchasing CDJs or any high-end product:

• If there is a picture of the product with a buy it now and an email address pasted on top. This is a guaranteed scam, where people offer ridiculously low Buy It Nows in an off eBay transaction.
  
• If the seller has very, very low feedback and has a fairly common picture of 2 CDJ-1000 Mk3s and a DJM-800, this should be a red flag automatically
• Any auction that says please contact me at a certain email address for prices on the item.

Watch out for these user ids:

brilliant-shine
chris21405angela
merjer2500dl
all-battery
linnhrk
yara33501
sdfvcx3g
janthonyse

Basically, the best thing to do is buy from a seller with a lot of good feedback and a $2,000 Paypal Buyer Protection. This way you aren't taking any risks with thousands of dollars. if you found this helpful, please click yes below. Thanks and good luck buying!