Here's another one:
Training/Conversions - MWHelicopters Ltd
They don't post prices for the AS350, but their AS355 prices are quite competitive.
These variants are all more or less the same and do not require a differences training: B, D, B1, B2, BA, BB.
If you just want to get the type rating, pick the cheapest model. You can do a diff training to a B3 or EC130 later anyway.
Current EASA TRs:
http://www.easa.europa.eu/certificat...t-07092012.pdf