Bloody hard to work out a starting cost really. Make a list of things you will need and have a look around on the net for prices.
Don't forget to add things to your list such as extension leads, all bumps up the cost.
Most of your cash will no doubt be spent on cutters. When i first started out which was not long ago i had a wet cutter and a small rubi ts 40. Thought this would be more than enough as i would only be doing things like bathrooms and kitchens, how wrong was i. Next thing a customer pulls out a large porcelain and before you know it you have 3 dry cutters. What i mean is even when just starting up one dry cutter is not sufficent for the work. You NEED a variety of cutters for the job. One week could be in a tiny bathroom that is so small you need to go outside to change your mind so need a small cutter the next week doing a large floor that requires something like a Rubi 700n.
If you don't have the cutters and tools for a job you simply can't do the work.
Things like trowels, tape measures and spirit levels, don't just go out there and buy one of each, 2 of each minimum.
Also don't forget to get a calculator
