I'm sure that is frustrating. Bookmaker is nice because they show you the limit without loading up a prospective bet. Looks like I can get $5,000 to risk on underdogs or to win on favorites for UFC 227 bouts on Bookmaker at the moment and I was able to load up a $1,200 to win $1,000 bet on T Dillashaw on 5Dimes. I didn't try more than that. I have only really recently started to give more thoughts to limits lately. For now I am sure my dozen or so collection of books will allow me to put down as much as I want for the foreseeable future on any one fight. At some point though I may need to add a local if I can find one or use the services the pros use online to get big money down if such places exist and are reliable enough to do business with.