You could buy one of these
http://www.thylacinecycles.com/gallery/album03 singlespeed frames for AUD2005 and fit it out at the local bike shop with these exact parts for about AUD5800..........or buy direct the whole thing direct for about AUD4600.
1200 bucks buys a lot of willpower, Munchie.
Plus, who wants to pay 8 bucks for a tube I KNOW costs the wholesaler about a buck!?!?! 8 bucks is a good feed down at Laksa King fer cryin' out loud