I was quoted ~$90-$100 for a replacement brace. The price really depends on your local fish store and what they can get a new brace for. If you have diy skills, then the cost is in whatever materials you can make a brace out of . Some people have used stainless to make custom braces and others have built canopies that function as a brace as well.
Lol, not planning a trip up there anytime soon. Seems like not a lot of Floridians are looking for big cheap tanks. Almost tempted to fix it myself and set it up.