I just saw this at the fantasy grounds website, after seeing a posting from the Savage Bloggers network that Fantasy Grounds, the Virtual tabletop is now offering their ultimate license, which allows a GM to host and players don't have to pay, for a monthly fee of $9.99!
Yes you do have to download software, but the software is simply amazing, and blows away Roll20.net's web based program. You are only limited by your connection speed for how many players you can have connect and they don't need to buy the anything.
Sure, in the long, long run, if you are playing for over a year, the cost will go over the one time fee of $149, but if you are strapped for cash like most gamers, a monthly fee is well worth it. The benefit is, you find a group. play for a few months, the group dies out, you only lost maybe $50.
So you do the math, $149 one time fee vs the $9.99 monthly fee...