Good advice from Stan. Not sure about paying 5x though. From the figures you quote you need to be very sure of exactly what the work involves and how the said work is priced. By my reckoning if you work this round over 15 days per month at 7 hours per day you will be working for about £11 per hour before you take off your running costs. The other thing to consider is what equipment is being offered. That could make a big difference to the value of the package.