I have bet on very high odds before in football matches but I have not tried it before in casino games. My experience in football about betting on very high odd is just like waste of money because I have no luck there and it is worse than going for moderate or lower odds. So I prefer to just make my analyses and bet on a stronger team that I know would win the match than to bet on odds that looks like impossible.
Betting on high odds and winning takes a lot of luck to work out especially when you are talking about odds of over a thousand. I remember betting on basketball games randomly with no analysis whatsoever, the odds accumulated to over 900+ plus, I knew my predictions were not solid so I placed the bet with 18 naira knowing the outcome would probably be negative, to my greatest surprise I ended up winning