Spycraft
Spycraft features a ruleset for transformers, it's very good!!!
Origin of the Species: Transmechs - Crafty Games | DriveThruRPG.com
of course you'd also need the core rules , but you would save time 'cause you would not have to convert the star wars rules.
i agree with you as a customer but the fact is that new products always cost more than older ones. there is no way around this. so one solution would be to wait. to be honest FC is the first game i spend 30$ to buy a pdf, but it was worth it! i'm very content
A Game of Thrones (d20) 500 pages $10. The deluxe d20 + Tri stat one is $25.
--> 2 years have passed since release, it cost considerable more
Midnight 2e $10. Bundled with the movie and a module for $15. 400 pages.
-->was released in 2006 and started with 30$ (not sure)
Dawning Star Helios...
The FC pdf is worth every penny! measured in d&d books it contents about 2 or 3 player's handbooks, a dm guide and a extensive monster manual with an critter/npc generation system. plus the fact that the system is variable enough to play anything from sword and sorcery and high magic to iron...