One thing you might want to consider, if you've never worn these before, is trying some knockoffs just to make sure that wearing them is for you. You can get off-brand versions similar to the KSOs from online Chinese distributors for ~$35 shipped.
If you ask about these on a barefoot website with a rabid pro-Vibram crowd they will banter on and on about how you shouldn't buy the knockoffs because it hurts Vibram, infringes on their design, and the quality is so poor.
As far as hurting Vibram and infringing on their design, nobody says you have to buy the counterfeit ones just get off-brand versions. Furthermore, Vibram doesn't have the right to be the only company that can make what are essentially toe socks with a thin rubber sole. Bottom line is: the "shoes" are weird looking no matter what brand brand they are, so who cares?
On the quality of the imitation ones, it is obviously not on the same level of what you would get from Vibram, but the quality of the Vibram shoes doesn't make them worth the extra $50+ either. At least not if you're just giving them a tryout. With the knockoffs, the seems probably wont be as nice and you might have to order a size larger because the sizing is usually a little off (always read reviews of others' experiences ordering to determine if you need to bump your size).
In my opinion, $85+ is a steep entry fee for trying to off the wall type shit like this. You probably wouldn't pick a $2,000 Les Paul if you're trying to figure out if you'd like to pursue learning to play guitar, so I would think most people would apply the same philosophy here.