Loco Honkey

I found one for $100 or so, and I'm wondering how good it works? Kind of a general question, but I'll explain a little further... I have a Metro hatch back that I bought to basically screw around with. I have a line on a G13B, which is the DOHC 16V 1297cc 100 HP Suzuki Swift GTi engine, and it will bolt right in. Anyway, I want to turbocharge this and since Hondata hasn't come out with a 4B Metro ECU, I'm going to go with some standalone stuff. Is the Rebic comparable to the SMC or AFC hack? These things go for $660 or so, new, so I'm guessing that $100 is a good deal, but would I be better off buying a new SMC or AFC?

Thanks.