Nothing was backdated, and you got nothing special.
An April UY runs from April 1 through March 31 of the following calendar year. Since the 2013 April UY runs from April 1, 2013 through March 31, 2014, we are currently
IN the 2013 UY.
You got nothing special at all. All you got was the points
you bought.
If your
DVC timeshare salesman told you that you got something special, he/she was
intentionally misleading you.
They may also tell you that you got a "deal" because you are only paying the annual dues from your closing until the end of calendar 2013, but your points can be used through the end of March 2014. Again --
intentionally misleading statement.
Annual dues
have nothing to do with UY; they cover the operation of your home resort (and common services like MS) for the
calendar year -- Jan 1 - Dec 31. You are not getting a deal by the prorating of the dues -- you are just paying the dues you owe.
You obviously know about the resale market.
With AKV (if that's the home resort you want), you can save a ton of money buying resale. The process will take a little longer than buying direct, but if you're paying 50-60% of what you would pay direct, it's probably worth the wait.
You have ten days, under Florida real estate law, to rescind (cancel) the purchase and get all your money back without question. My suggestion is that you thoroughly research DVC for the next week and make your decision as an educated consumer. If you can't finish your research in a week,
cancel your purchase and finish your research. You have absolutely nothing to lose by following that strategy, and maybe a LOT to gain.
In particular, research the points
costs of all those wonderful "Collections" options. In most cases, I think you'll find those options are cost-prohibitive and therefore something you wouldn't really use anyway.