Re: Cheap mats/floors to train MMA, BJJ,etc ??
I second the Dollamur mats. You can find great deals on their ebay store and because they come in different sizes you can aquire them as you can afford it until you fill up the area you desire.
I have 200 sqft of their mats and they are great! Because of their design you can even cut them (which comes very handy when outfitting a space!) without damaging them at all.They're also very easy to transport due to their light weight and flexroll system. Just roll & strap it and you're gold!
If you can be patient & persistent you can find them for a great deal. Just keep checking ebay. Good Luck!