NTSC Amiga 600

[icbrkr]

Looking to buy an NTSC Amiga 600, in good shape (ie, no yellowing, etc) with 1MB RAM expansion/clock in the trapdoor.  I don't need an accelerator or kickstart update, or even a hard drive.  Really, I'd prefer just the 600 w/2MB  

On another note, what would an Amiga 1200 w/HD (not sure what size HD I'd put in there) w/16MB on a 1230 030/33 XA board go for?

[icbrkr]

Another question... is it possible to convert a PAL based 600 to NTSC?  I wasn't sure if there might be a jumper, trace, etc on the main board.  I'm noticing these are much more common.

[icbrkr]

I don't care about using RF, however, I do plan on outputting composite to TV.  Also, I will not be using the Workbench for most things (I'm looking at this system as more of an old school game system) which is why I was thinking of more of a hardware hack for NTSC output.  Ah well, maybe I'll just keep looking