That seems awfully high. It's been a few years since I did cabling (okay 10) but when I was working that end of IT, we were charging $125.00 per drop plus materials, which of course would vary depending on the structure it was going in.
Mind you, if your installer has to get the materials for you, he is going to put an upcharge on that. It's his (or her) labor to spend the time sourcing the material while they could be doing installs and making money elsewhere. Not all installers work the same, we were never picky about the materials. If we gave the client a item list and they sourced it up properly, we would use it no problem. But we wouldn't warranty the materials. If we supplied we would upcharge for the material, but we would guarantee the job end to end.
In a way I kind of miss the physical network builds. They were fun projects, and always a challenge. Especially for certain clients. The client was more of a challenge than the technology...