2,200 is OK (yes, that does a day at low/medium power) but your choice is going to be limited in power variability. Either starting at 17 or 35 watts, that's it... (sad face)
In the UK, it's a dreadful price too. £50 for something you can cobble together from Fasttech for about... let me see...
£6.50 for the atomiser and £11.50 for the battery. £18.
Maybe you can get a good deal?
Now, don't get me wrong. If you enjoy vaping at a certain power, then these batteries and tanks are just fine (honestly) but there's no control. You charge it up and away you go. For some people, that's just what they want. Personally, it would cause me some problems.
I'm waiting for a Kanger Subvod. I know it's going to vape at 27 watts start to finish. 27 is a little strong for me, but I can use a lower nicotine liquid.
(I just want the top fill tank to be honest..
)
Forgive me, I am just 'down' about some of these plug and play all-in-one kits.
Do some research, see if you can make an educated guess at what would work for you.
If an e-cig comes with a 0.5ohm coil, it'll vape 30-35 watts most of the time (unless it's limited to 3.7v)
with a 1.0ohm = 17-18 watts (starts there)
with a 1.2ohm = 14-15 watts (starts there)
With a variable power box mod, you can choose to vape at more or less any power you like/enjoy/need.