From what I can make out moneybookers is a legitimate site with, apparantly according to Wikipedia, 2.4 million users. It also appers to be an accepted form of payment from ebay (according to Wikipedia again).

This form of 'escrow' transaction is one way of protecting both parties as the seller does not get the funds unless certain circumstances are met.

That being said, $1500 for all that seems a bit odd. There is something fishy but I'm not 100% convinced it is a scam.