Henry Hulk, wow, haven't heard that name in years. Nice designs. No kitesurf kites though, probably the most popular kites on the market now? Maybe in the west, not sure about the east.
Don’t forget the middle. There are many excellent spots for flying kites away from the coast. One of my favorite kite shops is out of Boulder, Colorado: Into The Wind[0] I’ve only bought from them once or twice, but I used to spend hours paging through their paper catalog as a kid. I also visited their shop in Boulder as a teen — that was really fun. [0] https://intothewind.com
A couple years ago I wandered past their store in Boulder and was floored that there was a real, physical incarnation of that magical catalog. I took my little kids there this winter and it was like passing a spark between generations.