Yes, I have seen them for sale at Walgreen's here in PA. Also Giant Eagle if you are in the western PA/eastern OH area. Save for vacation and collect fuel perks!
I haven't looked, but maybe online through the Disney Store?
Walgreens sells the standard ones. Disneystore.com sells some really nice ones if you are looking to gift them...all different characters & holidays & free shipping. They usually come in a week or so.
If you are a member and can use a $100 amount, Sam's Club is great. You get them for a little under the $100 and they come with an additional $10.00 to be used at the Disney Store online or in person.
You could order one/some online ~ *here* they are from disneystore.com *they ship for free. Also *here* they are from the Disneyland website *yes they work at WDW ~ they also ship for free ~ when I researched GCs on the WDW site I don't think they shipped for free.
I know our Kroger sells a couple different amounts. I think $25 and $50. I think I also saw some Disney gift cards for sale at Toys R Us, but not sure of the amount.
Thats interesting, I was thinking about ordering one online from Disney but would rather purchase a different amount then the $25 or $50 cards, I will have to check out walgreens first, I'm running out of time and don't want to go to the Disney store in the mall just for that. Linda