Any discounts that are offered while at WDW are the same that are offered to persons who purchase via telphone call. For BLT, that is currently $5 per point off the set price of $112 per point. For AKV, it is $8 off of the $104 set price, plus, if buying AKV, you get an equal number of "developer points" you can (and must use) within a year and which can be used only at SSR on site and you can reserve only 7 months or less out with them.
Not sure who you dealt with a few years ago, but what they said was not actually accurate -- they had for SSR purchasers then (the resort being sold a few years ago) a discount per point, which I believe was $10, which was being offered to both on-site and telphone purchasers, so it really had nothing to do with any estimate of your cost of being at WDW.
Sometimes, they have some extra little perks at WDW, such as they give you some fastpasses.