I bought my 18 last year for the same reason. My first proper bike was an RGV & after various 4 strokes fancied something small, light & fun. Fancied an NSR as they were a bit different, only going for the 18 as i couldn't afford a 21.

The 18 was £250 off eGay...but i think it's cost me at least a grand so far!

Good luck with your search, but keep looking cos usually a few all come up at the same time!
_________________

88 NSR250 R2J (work in progress!) & 05 Aprilia SL1000 Falco