Here is what TA said in another thread about this driver.
I think we all wish manufacturers would sell products at prices below their cost to make and ship them, but that’s how companies go out of business. 
So if you got a GT at $115, consider yourself lucky. Deals like that are rare. Now Lumintop has to make up for lost profits. :cry:
Lol
Signed up to show interest for a (one) GiggleMonster !
Amen… :+1: . The first 500 price of $115 in the original GT Group Buy was a rare amazing gift. The next tier price of $158 was pretty much a gift too. 
But like you said basically…. a company cannot survive if they do not make money. It is simply math…… 
Maybe they could…if everyone here signed some kind of a 10-years-total-care-agreement with Lumintop, obligating to buy at least one of their upcoming flashlights. 
As was pointed out above it basically boils down to the FET driver offering better overall performance for this light.
It will be brighter then the buck driver for any given input voltage from the batteries and since this light will virtually always be used at high power, the FET driver makes more sense.
The buck driver would be a better option if this was a light that would be run at low power levels for extended periods, as that is the only place it would see a benefit (and the benefit would only be a bit longer run time).
Hmmmm…. possibly so. :+1: . 
Thank you for the explanations Texas_Ace! 
:+1:
I have been on various flashlight forums for around 10 years. I’ve learned quite a bit about presales and group buys. If you want the best price get inline early because the price always goes up. This doesn’t matter if it’s a custom maker or a well known manufacturer. But know the risks. Besides dealing with unknown manufactures or designers, not the case here, you risk getting a dud or worse, an unsafe light. But there are other things the early adopters often lose out on such as improvements in binning, features, safety, quality controls, and extras included with the light. Some people are willing to wait for the final form and wanting to possibly get the absolute best version. It’s all calculated risks and what works best for your budget.
I would like to get a 70.2 conversion kit for my BLF GT that I already own. Thanks.
Signed up for 1 conversion kit and 1 lens.
Signed up for 1 conversion kit
Just a question. The conversion kit should ship via regular China Registered Mail or Prioritiy right? Don’t want to repeat what happened with my GT.
If that is all you are ordering, yes it will not be shipping with DHL, it would be far to expensive.
I signed up for the blf gt 70 + a set of batteries.
Thanks.
Eric
I want to change my emitter from neutral to cool. I want maximum brightness. Do I need to do anything?
You can use the edit link you got in the email to change the poll answer if you want but it is just a poll. You will select the emitter when you actually check out when they are for sale.
I would like an upgrade kit
I signed up for my first group buy on here! Hopefully I didn’t screw it up.
I reserved,
1 X Giggle Monster XHP70.2
and
1 X set of 30Qs.
I think you all usually get better prices on batteries when you buy through here so I figured I’d try that.
Oh I forgot I ordered NW as the tint as I thought everyone wanted NW but it seems a lot are requesting CW. I just want the best, although I’m sure that’s subjective.
Thanks my friend.
Glenn