I know someone who uses BBQ lighter fuel in their Nova when on cycling trips - as it's available in smaller quantities than paraffin to which it is very similar.

There are many petrol based solvents available in French supermarkets & quite cheap. The last one I was in there were a few with a differenct letter designation. I think the "C" was the best. I tried a couple of the others but the stove pulsed - it was a self-pressurising petrol model rather than a multifuel however.

Tryn using vegetable oil its not as hot but very very cheap (tesco value)

Spiritburner - have been reading this thread with interest. Having just spoken to my brother-in-law who is a research chemist for BP and used to blend fuels, he says that although toluene and xylene are benzene derivatives they are not presently rated as carcinogens. As I have used some panel wipe for my stove I will get him to look over the panel wipe spec carefully. Hope this adds to the debate.