If you go the cheapest you can find, you're most likely not going to get quality. Very rarely you could find a maker who is severely undercharging, but it'd be better to just save your money and get a good head. Popular makers prices are always high, so consider commissioning from a lesser known and newer maker. ^^
Be careful with buying stuff from different sources. Unless you're going for pure black or pure white, the colors might not match up. Hell, even if fur is made by the same company, the bales of material can have differences in shades, even if those are sold as the same one. What I mean by that - let's say you bought a fur called 'Sky blue'. And it's great. After some time you order another piece of it and after it arrives you can cleary see that the fur is a bit lighter than the previous one.But it's still the same fur, just another party of it.
So... I suggest either getting everything from one maker or just buying the fur yourself, sending it to the maker, and sew everything else by yourself.