According to the OS there are 81,305 members!!
You can see the LP split here http://www.tottenhamhotspur.com/membership/loyalty-points/
I wonder how many will be applying for each Cat B and C game that would not normally? Technically the odds should be the same whether by ballot or on-the-day online queuing - the difference is that the ballot takes away the sense of it being in our own hands through being in the queue early enough, working multiple browsers etc. With the ballot it is totally out of our individual control.
If you're a group you should get multiple entries in the ballot as the first one to get through would buy for everyone.