I tried this PRS SC today and it had a natural finish which was almost like no varnish or whatever at all. any know what type of finish this is?
On PRS? Probably a clear nitro finish
I've bought, sold, and traded more gear than I care to admit.
is it easy/relatively cheap to do nitro? also does it affect how much the guitar is prone to dings and knocks?
It's also easy and cheap to do a PRS style carved top and sunburst style finish.

These are just practice pieces when I was figuring out how to carve a top and do a sunburst.

These tops cost $4.00 to finish all of them.

Gibson style faded:

3 color