It sounds like you're really smitten with this betta, I really hope you can get him! I know what it's like to see one that you just can't keep out of your mind. Merlin was that type for me, and I picked him up right away, and Dragoon was a bit harder since I was also smitten with a blue & white betta, but Dragoon's personality fit the bill since I hope to put him in a divided tank with Merlin so I can take them both back up to college with me. So far, Dragoon has shown me that I definitely made the right decision in picking him.
Really hope you can get your guy!