one of the two caliper bolts (the larger ones) broke in half when i was changing Brake Pads, am i out of luck? do i need a new caliper or can it be drilled out? the other of the two is also seized up in there and wont budge no matter what i do.

Have it towed to a qualified repair shop. Unless you have experiance dealing with drilling and extracting broken and or crossed threaded and broken bolt. Your best bet is to have a pro do it. Or you can buy a new mounting knuckle/ hub when the extracting goes bad.

Are brake checks usually free? What is a good price to change brake pads?