I will also point out that all the TSA, SEEVIS and VISA fees and the training pack are part of the course price with OBA. You pay the fees yourself at each stage of the M1 process, the cost then gets deducted off of the course price. Obviously your expenses to and from the embassy are not covered.
So the £200 (ish) for the M1 and the £200 (ish) for the study material and pilot supplies are inclusive of OBA's price. So is the accomodation.