If you found some damaging information, then good for you for doing your homework. But understand, while most homeowners want (and need) to keep prices stable, it's still a supply and demand economy where price fixing is generally a crime.
Right now, there is an over abundance of vacation homes/condos available. There seems to be a growing number of owners who are deciding that offering a deal like $450 a week is better than asking $550 a week and have it go empty.
Windsor Palms is a lovely resort, but not in demand the way Windsor Hills is. I would expect you can find great deals there if you look, and even more if you ask.
Next week we're renting a lovely 6 bedroom, 4 bath pool home 3 miles from WDW. We got it for $1000 a week, taxes and pool heat included. I just found the same home on ebay for $119/night ($833 a wk) as a way of filling in his open weeks.
That's the price of a value room for a 6 bedroom home with private heated pool!
You're right to do your homework, but I would not assume that a below market deal in this economy is too good to be true.
PS: In my search I found 6 bedroom homes in Windsor Hills for $1,000 a week tax and pool heat included. There are great deals to be found and offering you a discount doesn't make them suspect as a bad person.
The 6 bedroom home WE LOVE and usually rent for $950 total was booked the week we wanted this year. The owners are lovely people and good business owners. They lowered their prices in response to this economy and guess what: their bookings are way up!