Nope, we booked a standard room with free dining at POP for Sept 2013 using that bounceback offer. The only restriction was that we could not book a Little Mermaid room, but, we could book the suites at AOA.
It's a marketing strategy by Disney, remember that UK residents have to pay a lot of $$$ for their plane tickets averaging from $1500-$1900, so, they are really not saving much, if anything at all. Plus, their average stay is from 2 to 3 weeks, that is a lot of money that Disney is getting from souvenirs and lots of extras.
Using that week long sample that you posted, they would be paying $4,069 plus
$1,500 in plane tickets, that would be a total of $5,569 for a week long stay at a moderate. For the weeks they usually travel for (3 weeks) it's $12,207 priced in the us website or $7,026 with their "special pricing". Sure, some people can afford to pay $12,207 for a basic package for a 3 week vacation, but, the average person would not or cannot pay that.