I agree that frugal doesn't equal cheap, but $150 wine is neither frugal nor cheap. That's the kind of shit we put people into the Anti Mustachian Hall of Fame for.
When searching for the world's most expensive bottle of wine, I came across this:
"The sale of 2,000 bottles direct from Lafite’s cellars, held by Sotheby’s in the Hong Kong Mandarin Oriental on Oct. 29, generated 65,473,000 HKD ($8,440,124). From the first lot of 2009 to the aforementioned 1869, prices sometimes hit three times the U.S. market rate."
That is an AVERAGE of $4,220.06 PER BOTTLE. Ok, take out the highest ($233,972), leave in the lowest (no idea), that's 1,999 bottles which cost $8,206,152 which is a per bottle average of...$4,105.13.
Ok, that's just ridiculous. I should search for the most expensive wine that one would actually drink, not just buy to collect. Surely that can't be too...ohmygod it's $6,999 for a bottle of 1997 Domaine de la Romanee Conti. Number 10 comes in at "only" $2,249 (hrm, even fine wines have a 9 at the end...cause $6,999 is reasonable, but $7,000 is just over the top).
Frugal is not defined merely by the price tag. If it were, then whose ruler do we get to use? Cause if we use a global standard, then I should be going "Ooh, look at Mr. Fancypants there, with his house, and indoor plumbing, and shoes." Frugal? Ha! $50 for shoes is outrageous, when you can simply go barefoot. $30/mo for water to flush down your toilet and washing with? Try $0 and just do all that down in the river (good place to get drinking water while you're at it). $100 for a bicycle...what's wrong with your feet? Your two pampered feet with "Dr Scholl's" whatever in your SHOES! Seriously, you guys think you're frugal with your a/c set to 80 in the summer?
Or should we set the bar a little higher? What would frugal mean to Donald Trump? Heck, flying first class instead of a private jet would probably not count as frugal...it'd be downright barbaric.
I suppose you could say mustachianism is simply a subset of being frugal. Specifically, it's being frugal with a single common goal: early retirement (or financial independence, depending on your like or dislike of official dictionaries). One can be frugal with different goals (cars, shopping, travel, home theater, fine dining), but being mustachianism requires being frugal with a goal of FI (though if the forums here are any indication, that only has to be a major goal...does not have to be the only goal or even the most important goal).