Am not surprised. Once you know what you are doing, you don't really need them. Plus I thought that they were overly pushing casino offers which is not something that I want to get involved in.
I felt the same way as you before I started, but it really is lucrative. Just don't jump in and start betting until you know exactly what you are doing. I started with between £50 and £100 and you can start making a profit with that. The only issue with using small amounts is that you need more...
How did these work out?
The second 2 look correct, the first one does too as long as you used the free bet and not £10 cash. B and E would stand for Bookie and Exchange. Don't forget that you do not have to place your free bets all at once, so you don't need as much money in the exchange...