I agree that prices have not gone up dramatically at the Value Resorts. However, less than 10 years ago, we paid $66/night (with tax) at POP.
In 2011, we paid $143/night for the Dolphin for Thanksgiving week.
In 2012, we twice paid $120/night for a 2-bedroom suite at Wyndham Bonnet Creek, essentially on WDW property.
In March 2013, we rented DVC points at $7/point at AKV, which worked out to $273/night for a 2-bedroom villa at a WDW Deluxe Resort. (AKV is really nice!
)
There always are
bargains to be had but it takes effort and patience to find them.
Over the last 6-8 years, Disney has not increased prices at WDW resorts, especially the Value Resorts, as drastically as tickets, food, or merchandise. They have to compete with offsite
accommodations. Still, a room in mid-July at POP is $141/night even with the summer discount. Any way you slice it, that's a lot to pay for essentially a small motel room.
A garden view room at the Grand Floridian for that same mid-July week is $408/night with summer discount, which should be enough to make most people gag. I'm sure people enjoy it but my idea of a vacation is not to cram into a single room with my spouse and two children, certainly not at $408/night.
My point is, even with "discounts", WDW rooms are really really expensive for what you get.