Webmaster traffic is readily available unfortunately however, unlike the surfer side traffic the cost of webmaster traffic IS higher because in the long run you make much more $$$ from it.
That said, you can (as has already been mentioned) get free listings on resource sites which in itself will not yield you high amounts of traffic instantly but, will assist you in getting your product or service 'branded'.
There are some traffic brokers for example
http://www.trafficdude.com who we use to broker our webmaster resource advertising that may be able to offer you some assistance when purchasing advertising space.
If you are looking for a specific type of webmaster traffic feel free to drop me an email (
[email protected]) as GA Media has pretty much a webmaster resource for any type of webmaster traffic needed failing that, we also have the means to get you hooked up with any of the resources that you might want to try out for webmaster based traffic.
I look forward to hearing from you shortly.
Regards,
Lee