I'd be disappointed if I couldn't get 2 sets (caps + bungs) done for £40 machining cost, then there's material, engraving/etching, anodising, screw and shipping to add on to that, so about £40 total per set (cap+screw+bung+cover). If you're both interested at that sort of price, I can firm it up with the machinist. Shims extra, but if you both need a couple I'll need to get more made, in which case I can get them done in the correct size.
I'd be disappointed if I couldn't get 2 sets (caps + bungs) done for £40 machining cost, then there's material, engraving/etching, anodising, screw and shipping to add on to that, so about £40 total per set (cap+screw+bung+cover). If you're both interested at that sort of price, I can firm it up with the machinist. Shims extra, but if you both need a couple I'll need to get more made, in which case I can get them done in the correct size.