try this
www.eaglejet.net
then goto program pricing, scroll down to B737ng
I have no clue what there like, or if you'd be placed on a 3rd world carrier, so be careful where you place your greenbacks.
Thats a lot of money.
Have you considered ringing a few recruitment companies, eg, parc, and saying "if I get my self a type rating", will you stick me in the right seat???
good luck