@igolotak
When potential purchasers ask you to contact them outside of the eBay messaging system, you're correct not to do so, since it is a violation of eBay's member-to-member contact policy unless you've been engaged in an actual transaction.
Also, sellers should not be accepting those offers that are at or higher than the Buy It Now (BIN) price--there's no reason for a member to make an offer at or above the BIN price when they could make the purchase through the standard eBay checkout system.
You're certainly correct when you state eBay cannot stop these scammers from registering with different ids to perpetrate their scams. If only eBay could figure out a way to do that, everyone's life would be easier--except the scammers, of course.
Good luck!
If, however, a seller has accepted the offer, s/he should wait until the nonpayment cancellation processes, if it's set for automatic cancellation, or process the cancellation for nonpayment manually when the option appears (after four full calendar days).
