I actually thought Barrows armor lasts 20 hours before fully degrading? And taking that into account, you could repair your full Barrows armor hundreds of times before ever reaching the price of a Dragon Platebody, and it really doesn't take much effort. You can grab a couple hundred thousand coins, Home Port, walk about 100 paces to Bob's Axe Shop, and you're set to go. You can even get a discount of up to 50% if you have a decent Construction Level and a high Smithing level. O.O