Lomo super sampler problems

Question

Hi I saw you answered a similar problem to mine about the Lomo Supersampler. My one also doe not appear to be working after being in its box for a while (no mechanical whirring noises!) I noticed you said you were based in the UK and were able to sort out jams like this -I was wondering how much you charge to fix this type of problem as if it isn't too much (and too much hassle for you!) I would like to get it sorted.Many thanks,Vicky