Every business needs to make a net profit, I have no problem with that, but with those mark ups its just taking the p*ss. I was about to buy until I read this tread.
I was in business for 43 years until I retired, and always tried to give value for money. This John is clearly not interested in giving value for money. Why not sell for half that, and sell 4 times the amount at least. The internet is a wonderful medium for selling good products at the right price, but it is also medium for getting a bad reputation fast, John you have been rumbled.