Hello...........Before I bought my PSR2000 in February I shopped eBay and saw that guy selling them without the adaptors. I gathered all the info about him I could and contacted Yamaha USA. Yamaha said that he was NOT an AUTHORIZED Yamaha dealer. He could buy these PSR2000's overseas legally where some do not come with the power supplies. There is a warranty on these but Yamaha USA does not honor them............"maybe" Yamaha Japan might. "Let the buyer beware"!
I took Yamaha's advice and did find an excellent deal from Music123.com
US dealers can often throw in freebies that can sometimes beat these lowballers. I got the survival and vocal kits free. -charley