I am not too sure of the exact bad dynamics leading to plantar fasciitis either, just that they can be a horrible nuisance to suffer from.
Anyhow i went to try out one of them, and the first thing that struck me was the price. 199 SGD for the KSO. which costs 85 USD on the
vibram website (There is no option for online purchase on their website because there is a distributor locally ). The local distributor and/or distributors sure know how to do the math, and i am not even sure if the other retailers sell any cheaper.
I got my sizing anyhow, but will scout for an online purchase..
Ryan