yes its only if you lose birds you lose rings, but if not they are there for good to use year after year, if a club is putinf 4-5 hundred birds away each week with rubbers it works out a few quid at the end of the year, so clubs are saving as they dont have to buy rings, the members yes but i still think the good things about ets make it all worth it, and all we have to do is try not to lose many birds, and make sure the birds you are puting them on are worth it.