I dont think its worth growing the dwarf ones in pots because any coconut is going to act like a dwarf when potted. I was thnking about the same coconut a few years back, but it wasnt worth the price on ebay. I think the dwarfs are only worth growing in the tropics since its resistant to lethal yellowing and the fruit is much easier to pick on the dwarfs than the talls.
-Alex

how much are they asking?

There are two but it now listings and one auction. The auction has a startind bid of 24.99 with 19.61 shipping. That is just the coconut not a sprout. One but it now is for the coconut and is 29.99 plus 19.61 shipping. The other buy it now is 60.00 with free shipping.
Alex: do you know what kind yours is? I like yours.

Im not sure what kind of coconut I have, but I dont think its a tall (Might be a Malayan Dwarf Coconut which is kind of a medium sized coconut). It grows differently than my tall that I got from Hawaii (more compact).
-Alex