I seem to remember reading one of Cheshire Figment's posts recently explaining that they are not applying current gate prices to non-Disney purchased tickets anymore, but I could be wrong. I'm reasonably sure they still do it for any ticket pruchased directly from any Disney-owned source.
Anything and everything you ever wanted to know about WDW tickets can be found in this wonderful thread complied by Cheshire Figment, who is, BTW, a WDW gate ticket agent At BB and Epcot, mostly) and has been for years.
http://www.disboards.com/showthread.php?t=1452684