I prefer to build. I do have some ARF's that give me a quick fix. I have high regard for the value of GP planes. I also have some issues with them. It takes me 6 months to a year to build something and it costs a penny or two also. I have the GP PT-17 Stearman and it flys great but I will replace it with a built Ziroli at some point.
Buy one if you like it! The price is probably fair and what to market will bear.

Carl