What happens after 6 months? The price goes way up or something? I'm totally not in the loop about this.
They haven't announced anything official (nor should they) but it's likely going to be one of three things happening:
1) They've assessed their costs correctly and will hold that low pricepoint for another 6-12 month term.
2) They're slightly off on their costs and adapt the cell phone billing module: as long as you keep continuously paying you keep that price but if you join new later or miss a payment or make any changes whatsoever you get tagged with the new term rate
3) They've wildly underestimated their costs on this project and will raise all prices in 6 months to adapt.
If the WWE is smart they're starting this with an IAAS firm like Rackspace managing the day to day ops of the systems backing their network so that they can have a fixed monthly cost on their operating expenses. If they're stupid they're doing it all in-house and are going to get lit up when the service opens.
The X-factor here is the partnership with the MLB Advanced Media. Depending on how much of the costs and ops headaches they've offloaded to MLB this could be a win, but the 6 month pricepoint is probably based around when the MLB/WWE relationship comes up for renewal and, depending on how the renegotiation goes, that could also mean price increases across the board (though I suspect that would be more along the lines of a more reasonable cost increase than option 3 above; say, 0.50 increase service-wide as opposed to 3.00 or 4.00 per month on option 3)
The software as a service business is all about setting the correct monthly recurring revenue to realize a profit. Unless they have a ton of SaaS experience on staff the price will probably be in a state of flux for the first year or so, and we won't know whether this was truly a success for a year or two when the money hits the WWE's books.