The old prices were increased to those levels just last August. So this makes two increases in one year, fueling speculation that Disney thinks it has too many APs (estimated around one million now), and wants to bring the numbers down a bit.
I think the deal is a great one. If I don't have an AP, I always look forward to 2fer time to make an annual trip. I just think Disney should either start enforcing the SoCal residency requirement or remove it altogether. Or they just don't really care about since the promotion has proven to bring in $$$ for them.
Another thing to watch out for is craiglist sales of the 2nd day. Some people try to resell the ticket (which is against the ticket policy) when they realize that they aren't going to be able to use the 2nd day before the expiration.
This is not a very trusted way to get tickets. I don't think there is anyway to check the ticket for the expiration. I have warned many a friend about purchasing tickets this way. It's not worth the "discount".