I need one (1) bucking spring for a Unicomp keyboard. Since I live in central Europe (Belgium), buying the item in new condition will cost me less than $0.5 and shipment will cost $10 (US/UK, same shipping price)
If someone has a couple of spare springs (3-4 of them so I got spare ones for future use) and can put them in an envelope (snail mail, cheapest method available), just tell me how much it would cost, I can pay for those through paypal. Or I can trade them for blank keycaps (Pearl color) if you prefer that solution (one spring vs one keycap is a fair trade I guess)
