In need of a little advice.

I have been offered a Kart at what i consider to be a good price. I have attached a picture (Sorry for the quality) & would appreciate advice as to approx how much to pay & any info as to the chassis etc etc. Is all i know, it is a TKM 100cc engine & a TKM chassis. Not sure on age but it is in fine condition & comes with stand/spares/tyres etc.

Help much appreciated
AndyB

Here it is:-