Wig experts

I think this was already said but make sure to PIN THAT SUCKER DOWWWNNN!!! As you can see in the little avatar thing my Pc has white hair. I was running jumpping and rolling around and my poor wig needed some SERIOUS TLC. I got my wig from ebay for like $10 and its great! Just make sure you take good care of it! I would say especially if you have a long wig (mine is a little past my chest) to comb it constantly I did in the morning and whenever I had some down time because it will get knotted. I would say for a long wig that's used for KR it should last about 2-3 events before you have to get a new one.
When this one starts getting icky and I cant get another right away, I'm going to make a nice long braid out of it and wear it like that till I can get a new one. So be ready to get creative! Another good tip is to soak it in fabric softener over night. That will do wonders! Good luck I wigs and have a huge collection so if you want any tips n' tricks PM me!

Really, you're better off going a step above a halloween cosplay wig... If you're willing to invest a little money (think starting at $40+), you can get great realistic, durable wigs around the Fashion District in NYC. You've seen how well mine holds up ya, and how good it looks? I roll around in the mud in that sucker, run around, everything, and it's never fallen off once, and it's still holding up after 2 years of LARP-wear (not to mention the 10 years or so I'd had it already).

Check out this ebay seller laura_wu. She has really good quality wigs and sometimes she runs specials. I've bought a few wigs from her, and they are the silkiest wigs I've owned.