econometrics, you seem correct, there hardly seem to be any online shops for "wireless desktop microphones" except for a few as follows: http://www.bizrate.co.uk/search__keyword--wireless+desktop+microphones.html http://www.shopzilla.co.uk/7Y_-_cat_id--16695__keyword--wireless+desktop+microphone Maybe it is not yet in demand? There is a link giving more information on the same as follows: http://prodytel.net/sales/prodytelproductoverview.pdf
I found a gaming one, but the battery life is a max of 4 hours... which is not a complete trading day so for now ill stick with the corded headsets
I used to use a Bluetooth with Skype for conference calls. I don't remember how I configured it but I know it worked. I just used the bluetooth that I had for my cell phone. After all it is a mic.