Loris, 'King Kit', in Shropshire, UK, have an Airfix Hampden in stock. It's a bit expensive, in my opinion, at £16.99, although I think that's how much it was when available, and I would guess that shipping would be around another £8, but it's possibly the only place you'll get one quickly. The company specialise in out of prouction kits, and I use them fairly often, finding their pricing and shipping charges reasonable overall, with no big 'mark up' just because a kit might be rare. Some of their stock is priced at the same retail price as when first introduced, and I've bought kits from there at below the cost of the same kits which have been re-releasedand are now current!