I agree 100% with this. I too had my boy flown to me. OK to NY.I agree with everyone else. I'd pass on that breeder as well. I got pretty lucky when I was searching for Logan's breeder. I found them relatively quick. They were great people, they show their dogs, they do the health testing, etc. The only downside is that I live in New Hampshire and they lived in Arizona. That wasn't really a problem though because we were able to fly Logan into our local airport. What I'm trying to say is that you shouldn't be afraid to reach out to breeders outside of Florida. Sure it's ideal to have them in the same state, the closer the better, but you may find the right breeder a little further away.
Have you tried to do a Google search for "health tested boxer puppies"? You should get a decent list by doing that. Good luck!!
Here is a list of breeders all over:
(note the list may be outdated some may be breeding some may not but it's up to you to contact them and be sure to ask about health tests)
Links - American Boxer Breeders