Alan, you're seeing it as cheap because you're in Ireland, where the item is.
The guy has entered a silly amount for international shipping, but has kept the normal postage for local, meaning Ireland.
Also, he's physically entered that, that's not an automated eBay guestimate or anything like that.
You get to enter a shipping price, and then if you click 'ship internationally' you get extra postage options where you can set an additional postage charge. So he's just done that and entered 3999 - probably because he doesn't want to ship internationally but didn't realise he's clicked the 'ship internationally' button.
Or perhaps he's checked the box for Northen Ireland and eBay has forced him therefore to select ship internationally, and because he doesn't want to mess around shipping to Britain or elsewhere, he's entered a silly postage amount.
Item location shows as Wicklow, Ireland.
[h=3]Postage and packaging[/h]
Item location: Greystones, Wicklow, Ireland
Postage to: Worldwide