That's more than you pay for an NFL or NBA game. It can depend on what time of year you buy them; you can get them for 100-150 bucks cheap if you do it right for the NFL.
The UFC didn't used to be that expensive. To get decent seats you would probably need to pay somewhere between 300 and 1000 depending on the event today, maybe more in a really good event.
Low chance I will ever go to a UFC event again; I've pretty much had my go at attending MMA events in this lifetime. If I can go to multiple concerts or NFL/NBA games for the same price, fuck that.
Home is better in a lot of ways anyway (cheap or free). At the events I got some asshole in front of me that wants to stand for the whole time and block my view and some idiot giving me a headache screaming "kill that fa*g*t" from behind me, like right in my ear, no thanks. Some of the times I've gone have been better than others, but there were always all kinds of fucktards at MMA events. I had some fun but wouldn't be likely to pay these prices when I could do something else cheaper that would be just as good.