You've accused him of 'outright lying' but you don't seem to offer any proof. He's selling from Bosnia and Herzegovina, who knows what rules PayPal has about transferring funds to a B&H bank?
And his price is higher on eBay? So what?
TLDR, you couldn't agree on a form of payment. Get over it.
Might I add that the price we had agreed was for 80% of the groupset - and much less than he is offering on Ebay!!!