And offer him our B2s for a non-negotiable £200.

Come on, surely we all have a B2 (or similar) bought on the basis that (a) it was only twenty quid, (b) it might be interesting, (c) it's an actual gun, for twenty quid, (d) we thought maybe we could tune it and make it not rubbish, and then either couldn't really be bothered, or tried and discovered it was only a tiny bit less rubbish.

I may in addition have seven-tenths of a Crosman 2240 in bits that I'd be happy to sell him for £100, and most of a knackered Diana 6G, also handily pre-disassembled, at a similar price point. Ought to make him very happy.