I have actually had some really good luck water proofing my New Balance shoes with Scotchguard...granted I have to do it about twice a year, but it sure beats walking around in wet shoes and socks for 3/4's of the course...not to mention that they last me about 2 years of use.That does not WATERPROOF them, it merely water resists them.
New Balance does have a line of Waterproof shoes, I am a fan of New Balance as well. Spencer, they also have the BEST selection of sizes (width in particular). I personally have a combination last, skinny heel, and a wide foot base, so I really need a shoe with a B heel, and an E front. I found that to be the case in my Keens, which is probably why I liked them as much.
I would venture to bet if you went to a few stores and tried on some shoes, you could find what you liked, and then shop online for a better price point.
$100, $110, it doesn't matter, if your feet are not comfortable, your round will suck. Comfortable feet make the entire day feel better. Dry feet, make you feel a ton better then wet feet.
Waterproof socks are also a good option to ensure a relatively dry foot, though they do tend to make your feet wet from the internal moisture, your feet do dry quickly once out of the socks. They typically are only good for about 1-2 years of disc golf wear though.