First of all, it’s not £30. See the FAQ for pricing. Secondly speak for yourself and not others. The main reason why I went with a distributor is simply down to the fact that I’ve put 4 years worth of work into it. It comes with a map with custom scenery and 5 vehicles that have had tons of features packed into them.
No, its around £20-£25 on Steam. It has been mentioned before not to pre-order somewhere, as its about £10 more expensive. As Rhys said, he's spent many years on this, and deserves something. Why he would want to release the vehicles separately, I have no idea.
I highly recommend downloading the Volvo B9TL by AD156 and the London Citybus C400R from Rhys. Both of these buses are fantastic and are great fun to drive. If you wanted to drive a coach. Have a look at the Caetano Levante also available on here. Its packed with features and is a nice coach to drive.