Keep looking. They can be hard to find. The company I got my GT2 from is no longer in business. I know Blow By You and Pirate Cycles WERE carrying them, I don't know if they still have any. Part of the problem is that Grubee only sells these to dealers and he sells them by the shipping container, so you need someone who's willing and able to buy them by lot. But the bike is well worth it, in my opinion. It's very well built.
I'm a little saddened to see the GT2-A frames being sold as just the bare frame at prices the COMPLETE steel bike once sold for. I'd be tempted to replace the frame on mine if the "A" frames were a little cheaper. But I've got a lot of work in the painting alone on my GT2 and, well, it ain't broke, so why fix it.
Someone somewhere has to have some GT2 or GT1 bikes available though.