Wow, it's like reading my own thoughts. Beware, though, there are Vibram Nazis afoot, lol. I asked for opinions on using ballet shoes at the gym (I must walk at the gym; I have 2 children and visions of them being themselves and whining, fighting, etc., if I attempt to take them along on a walk. Whereas, at the gym, I dump them in the nursery, come back in 2 hours, and all three of us are happy, lol.)
Anyway, I think that the exorbitant prices on minimalist shoes is ridiculous, too. I would very much encourage you to find alternates. I currently walk in water shoes, but I've forgotten to stock up before the end of summer, so I'll end up paying dearly for new ones when these run out if I want to replace them in the wintertime. I normally buy mine for around $5 from the clearance bin, lol, and I can't abide the thought of paying $15-20. (Did I mention I'm a stay-at-home-mom on a budget, lol?) I'll buy a cheap pair of ballet shoes to get me through winter, then I'll be able to buy a really cheap pair when spring hits. Water shoes are more minimalist than plimsoles, imo, but the plimsoles will last longer, and, really, no need to replace what you've got when they're fine for getting your start.
Motherhood: When changing from pj pants to yoga pants qualifies as 'getting dressed'.