With the Pico's and stuff from China, it costs so little that it doesn't really matter, and I don't ever use most of it, just store it. ProVari's i paid full price for most of the P3s, and ProVape-1, and 2s and 2.5s and Radius and Procyon (never really used the latter 2, just wanted a complete collection), but I've gotten my use out of 'em, and they run forever. Mechs and mechs are mechs, and don't change much. Is this heavy metal battery holder worth $200-$300 ...? IDK, hard to say, but I like 'em -- and the ones I liked like GG gear have all become collectors items worth a lot more then I paid for it in the first place -- which is more than I can say about some current trends. Yes, your new stabwood mod looks AMAZING! But I'm being polite and open-minded, really they all look a lot like my hairstylist's fingernails to me ;-) I want to carry this around with me why? So I haven't spent too much on 6 months long waiting list, facebook private group only, $900 for a crappy DNA chip with no warranty -- best of luck once ya buy the thing, what's customer service? we're too dysfunctional to even have a website -- mods... The most expensive TC/VW things in my collection are all Dicodes, which all do pretty much everything I want out of a mod, and while they cost a lot, they also upgrade everything when they release new tech, so when they release new revisions, they'll swap circuit boards for a total cost of roughly 20-25% of the original price. And, I'm using those. I'd be perfectly happy using 'em indefinitely, but strongly suspect I'll always be able to smuggle new mods into the US. Nic will be the main chokehold. I don't really care about 200watts, 300watts, 350watts, 1.2gigwatts... I switched to mostly TC a year+ ago, Dicodes is pretty much the best chipset on the planet at the present time (in my subjective opinion), I'm happy with my choices.
What would I do different in retrospect? IDK... I sure have a lot of ProVari minis & Kayfun lite+ clones that I will personally never use, but they're like the Bic lighters (or Zippos in the case of ProVari) of the vaping world, and cost roughly have the price of nothing, so... why not?
EDIT: FWIW ProVari facebook groups have WokeN uP lately, and there's a LOT of people selling and wanting to buy. Seems to very much be a sellers market with buyers paying retail or more for multiple ProVape devices. So if anybody regrets buying eleventy-three ProVari's, here's your chance to unload 'em at a profit. Though, I don't know anybody personally with a ProVari horde who wants to get rid of anything; the ProVarinati seem pretty content