Early build models had minor issues with the transmission solenoids etc but I would not say there were electrical glitches. My JDM was built Feb 08 and I have had zero issues (knock wood)
Let's put it this way, there is nothing that can't be fixed relatively simply by one of the vendors on here.
110,000 for a used GTR (jdm or not) is crazy!!!!!! though.
I wouldn't advice buying RHD in the US though. RHD GTR parts are more expensive than LHD. The rhd steering rack costs 5000!!