www.rtn.tv
The service is in fact $99.99 per month. It used to be a lesser amount back when Philly Park/Woodbine were partners and was packaged at TRN (The Racing Network), but since MEC has taken over the price has gone up.
Unless Las Vegas works differently than the other OTW facilities in North America, they pull the majority of their signals from C-Band or the new digital converters, not from RTN. But perhaps all of this has changed in the last 2 1/2 years since I've been a mutuel manager in PA but I highly doubt it.
BTW, the time when the coverage of tracks will be not so great is when the MEC tracks end their meets and the CDSN tracks start up as CDSN and MEC obviously have no agreement to share signals (i.e. the MEC/Xpressbet/YouBet/AmericaTAB fiasco)
Hope this helps...