Monocock beat me to it, nos such thing as cheap and a twin.
As a thought, if you are scrimping on actually gaining the rating how are you planning on keeping it current???
I fly around 100hrs year in a twin and that probably keeps me on the edge of competant.
Peterborough Conington, offer a fairly cheap twin rating with an outstanding Instructor - Grahame Tough.
Did mine there and so good was the standard of Instruction we had to make up things to do in the last hour to meet minimums.