Yeah, I think $16 is a rip off as well, especially since manchester terriers need to have their nails done weekly. I doubt I will find anywhere around here that is much cheaper...they figure if you can afford to live in the area you can pay up the wazoo for nail trims!
If I only had someone to help me I'd be open to doing it myself. DH has no patience for this sort of thing. Now if he needed a dremel to do a bit of handywork around the house he'd be on it, but if it involves sqirming, thrashing dogs, forget it!
ETA: Just came back from the groomer. I found a small boutique that charges $10. Zack was so frightened by the sounds of the blow dryers he was too scared to fight, lol. They did quick him, twice, and said that it happened because his quicks are really long and that they should go down with a few trims. I hope this doesn't make him more scared of strange places, but it had to be done. I just couldn't bear the sound of "click, click, click" on the wood floors anymore, and he can't do agility with nails that are too long.