It varies by area, you can find some pretty cheap pygmies here, but in many cases you get what you pay for, these are generally not disbudded, wormed, vaccinated, or registered, and in most cases haven't had alot of handling and are WILD. I raised some a few years ago, bought their mom's bred (honestly I only bought them because I had such a long time to wait before my kids were born and I was really itching for babies), bought them for $35 each, they were unregistered, horned and wild. In two weeks I had 3 babies, I sold the doe kids for $50 each, they were wormed, disbudded, vaccinated, and very friendly! The buckling was put on a bottle (doe rejected him) and was also wormed, vaccinated, banded, and disbudded, I sold him for $35. I banded horns, wormed, and vaccinated the does, one doe tamed down, the other was still fairly wild, I sold them for $75 each (exposed to my nigi buck). A few people desided against my kids because the could get them cheaper, and I wished them good luck! Personally I think my kids were worth every penny.
I guess that was long winded and may or may not have helped, look around see what they are going for in your area, and consider what has gone to these particular goats, are they friendly? Disbudded? Vaccinated? Etc.? If yes, then I'd say it's a very fair price!
I raise Nigerian Dwarfs, I sale all wethers for $50, does and bucks average between $150-$250 depending on quality.
I hope that helps!