Depends on the R32.
You can buy an 89 model R32 for around the 12k mark and expect an engine that will need work, less than perfect paint, and minimal modification.
OR
You can buy an already modified 91-93 model that has been loved enough for the previous owner to spend all/or lots of their money on.
Depends what you are after. But remember if you want an R32 with a GTR kit, good engine, nice wheels, exhaust and suspension... then you are going to be looking at 17k and up. To do this yourself you may be looking at around $20k