Since you're in the Houston area you can go to Traders Village off Eldridge Parkway to the tool shops and get medium and micro files.
You can get them there a lot cheaper than at MicroMark.
Go to Hobby Island on Richmond Ave where they also have small modeler files.
For your saws, go to Gemco Jewelry supply nextdoor to Sharpstown Mall.
I got my Jewelers saw there along with a variety of special tweezers, files, Dremel accessories, magnifying lamps, all kinds of stuff..
The saw was 14 bucks and the blades are $3 to $7 per gross (144).
Make sure you get a Jewelers saw with metal fittings.