I got a estimate recently from Harbor Custom Canvas in Long Beach for their low end Bimini at about $900.
http://www.harborcustomcanvas.com
At this point I am still using my $15. Bimini.
1 - 5' X 7' Blue (Katrina) Tarp
4 - Blue Bungee Cords
2 - 7' half inch PVC sprinkler pipes.
4 - Half inch sprinkler pipe "T" joints.
8 - Zip Ties
I know, I know, looks like crap, but I only use it when I am at Catalina.
I Sail Econo