I could be wrong but you might be hard-pressed to find a rack of fracs in different colours for that range. Perhaps getting a rack and relabelling might be best but even then, non-standard/different colours are gonna cost ya!
If you aren't tilted by mixing molds, then just get some starbursts to use as a versatile fractional chip. There are tons of them out there that you can get at the low end of your price range.