I've got the same problem with reaching my feet. I go to Grocery Outlet here in Tucson and they have some off-the-wall products marked down enough to make buying them seem like not a totally bad idea, and that's where I got my ShoeDini. I forget what I paid for it. It telescopes from about 21 to about 30 inches and there's nothing hip or elegant about it but it helps me get my shoes on when I need it.
You can get it from Amazon here: [http://www.amazon.com/Shoe-Dini-Telescoping-Horn/dp/B0039JSDPS][1]
[1]: http://www.amazon.com/Shoe-Dini-Telescoping-Horn/dp/B0039JSDPS/kkorg-20http://www.amazon.com/Shoe-Dini-Telescoping-Horn/dp/B0039JSDPS/kkorg-20
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