So, after introducing my nephew to G1 over the last few years (he's five now) he has become a major fan over the last few months. I got him a current prime toy last year but now he wants as he calls it (the proper real optimus prime! i.e G1) I have absoloutly no knowledge on the toy lines really but I don't intend on buying him a NIB prime to play with! Anyone suggest an option? I have read about Jap knock offs, what are these like and are they reasonably priced?