Yes. Feel free to mix & match!
Lists updated up to post #6
3 total please:
1 x G337
2 x G338
Cheers!
Caleb: Got that. Which warehouse?
Do these have any low voltage protection?
US please
If it’s ever possible for these to be shipped to Vietnam, I’d like to jump in for 1x G338 and 2x G337 
US warehouse. 3 338 and thanks
How do you do the 3 for price of 2 on Amazon ?
According to Wuben: Yes, at 2.2V (I need to verify this)
Not possible, sorry! If your country is not mentioned in the OP, then you are out of luck.
By sending the payments via PayPal directly to Wuben, who then arranges the shipment from the correct Amazon warehouse.
ps. Lists updated up to post #14
I would like 3 of the 337’s, US warehouse
Please include me for US Warehouse: one (1) - G337 and two (2) - G338
Neat lights … Thanks!
Lists updated up to post #17
I’m in for 2 to get the 3rd free.
Are they shipping to Canada for free as well from the US warehouse?
Your location says “Australia”. Do you have a postal address in a listed country? (Using shipito or similar…)
Yes. Free shipping to all listed countries.
Awesome. Then I will take 3 of the G337 US Warehouse.
Thank you for the group buy.
Thanks! Added to the list.
Anyone?
Come on, guys! You can do better than this.
I am interested in this light, but googling around to find reviews led me to this product on amazon which looks like the same thing (model number G337) for $16.70 with an $8 off coupon. I’m wondering if there is some confusion here?
The light you linked to is not titanium.