[Exodus]

Hey no worries, I myself have just started collecting Transformers recently, and yes they may cause you an arm and a leg, depending what figure you want and if you want loose or MOSB. The best suggestion I can say is to hit the sister sight TFW2005. That's where I went to get more info.
The only reissue that I know of on the Dinobots is Masterpiece Grimlock which was released 2010 if I remember correctly. The movie lines aren't bad though, although ROTF has better figures and selection than the DOTM and the first movie.
RID is strictly from Transformers Prime, so if you like that series you'll like the figures.