I originally posted the list of Type Rating providers some time ago on pprune. Therefore both that and any others that I posted would be somewhat out of date now. Nevertheless they still give a very good perspective of the kind of ball park figures you can expect and the associated providers. Note also that the majority of the posts were based upon the FAA system.
Here is another more recent list orientated towards JAA TRTOs, I've included it below to save you having to search pprune. Hope it helps folks.
Just come across an electronic brochure from Bond Aviation Servives which includes some type rating information. Though this brochure is about 7-8 months old it'll nevertheless give a general idea of what to expect before confirming the current price/course package with Bond....
B737 Classic £10,500+VAT
Base training 4,500+VAT
B737 NG £10,200+VAT
Base training 4,500+VAT
B757-200 £13,000+VAT
Base training £5,500+VAT
Some archived emails I also had on the system contained the following info from other TRTOs (remember these are not definitative, you'd need to contact the respective TRTOs but at least give people an idea or expectation of the cost)...
Cockpit4u
B737 EUR17,300
B737+MCC EUR19,700
Base training EUR5,300
Sabena Flight Academy
B737 (inclusive of Base training) EUR28,500
I hope that helps but one things for sure that's a lot of money and perhaps buying multi engine time would be better (just a thought) as it can get your voice heard across the board. A specific type rating puts you in an overcrowded and long line behind hundreds of others and ends up being expensive whether you get a job at the end of it or not. Anyway just trying to help and not biasing my comments on any one side of the argument. Sermon over