As fekin said, alot of what ifs. Would need more info than that to give a rough idea. Other than that just check out how much it would cost down Topps. If you want to know how much it would cost your tiler for the ads n grouts, trim, levellers, primers n whatever else needs to be used I wouldnt know, depending where we buy from we all get different trade discounts and different % on different gear, depends what he needs to use. I can tell you it costs a lot more for pro gear as apposed to DIY muck than the average client would think.
If you are trying to do the math, get a couple of quotes in and that'll give you an idea if your getting hit a bit hard.
Have you had any other quotes yet?