Are you specifically looking for a brake/compensator for the functional properties over a flash suppressor? I'm only casually conversant in the various different "paths to legality" with CA builds and what is allowed on each, so I'm not sure if you're looking for something in that vein as a legal requirement, or if a brake/compensator is specifically what you're looking for.
IMHO, $100 can be a little tough to swallow for a muzzle device, but really, if you want one of the better comp/flash suppressor combinations, that's pretty much going to be where you end up. There are better compensators for less, but they're not going to be great performers when it comes to flash suppression/mitigation.
BCM Gunfighter compensators might be something worth looking into, as well as the Surefire Warcomp, which also has the advantage of allowing you to mount a Surefire Warden since you can't use a can, and at least turn it into something more similar to a linear comp.
~Augee