Yeah, I noticed it is selling for $69 w/batteries which is a great deal. But I've learned that you get what you pay for so I'm a little leary on making the wrong decision here. It does boast that you can get 2 days of charge and that sounds great. That's pretty subjective depending on how much you vape but still if I get 1 day, I'm happy.
I've never used that store before so I don't know anything about his practices or product. As was said above though it is just a DSE-905 with a 901 to 510 adapter and 510 atty instead of the standard 901 atty that usually comes with that unit.
First thing I would say is that you definitely want to check whether it is a 1st, 2nd, or 3rd version of the DSE-905. From the pictures it looks to be either a v1 or v2. If it's the v1 I would look elsewhere as there were many issues with that version.
As far as the price goes there are lots of places you can look for the unit but just as an example. You could get the same unit from
LitecigUSA and the kit would come with a 901 atty and you could add on an adapter and 510 atty and get it all for the same price. Which means you would be getting a second atty with it for the same price. Or if you want it with just the 901 which comes standard with it you wouldn't have to buy the adapter or 510 atty and would be getting it for $15 cheaper. As I said that is just one example of one place I know of off the top of my head and there are others that carry the same unit.
The important part is if you're curious about the device do research on the DSE-905 and remember before you buy it anywhere to double-check which version of it they carry.
As far as the unit itself goes I have a 905 v2 and have had no issues with it at all. One thing you want to be careful of with it is to not leave it turned on and unattended for long periods of time as it has a cleaning cycle that makes it very hot. Always best to use the main on/off power switch to cut power or disconnect the atty or battery when not in use.
edit: I forgot to add... in order to get two days use out of 1 charge on a 14500 battery you would have to be an extremely extremely light vaper. Personally I get about 5 - 6 hours out of one charge.