I'll give you a slant from an Irish perspective. Because technology has become more affordable expectations of cost have plumeted along with them in my experience.
I got a call recently from a Web design company that wanted to add in a basic video element to their product. When I gave a basic price to produce a no frills short video of €800 - €950 they laughed and said they would pay €250 as there was only a day or two involved. I then asked them if they would produce a basic website for a client taking a day for €250 and I was told I wasn't comparing like with like.
Costing projects is always difficult and I'm in the business 20 years. Work out what it will cost you first and then work from there factoring in stock costs, tax, travel and insurance. Only after those are covered are you making money.