I have to agree that £50 per annum for two people just to have the option to obtain tickets in a poor part of the stadium against Stoke on a wet and windy Tuesday seems expensive (sorry that's the only weather i can think of when writing about Stoke).
If i was living in Liverpool, i would have loved to have had a season ticket, but as it happens, i live in the big smoke. Therefore, if i am heading up for a game, it might be for 1/2 games a season. The new stadium will allow fans like myself to get there for at least 1/2 matches a season, perhaps even with hospitality bolted on if it is for a special occasion etc.
This is also why we should be going for a 60,000 capacity, not 50, as that will not be enough once you sell 40k season tickets and 4k away fans. You are then only left with 6k, which to service the whole of the Everton fan base seems paltry.
The average amount of season tickets sold within a stadium for PL club seems to be around the 70% mark (with some very basic Google research), so if we sold 40k, the capacity we should be looking at is 57k.