I sort of wish someone had given me this advice when I was considering an SVD, but of course I likely would not have listened...
Just forget the SVD and get a Provari! I bought an SVD back in May, and I used it for 37 days before the firing button failed on me. I was lucky enough that I bought it from an awesome vendor (VaporEngine), and they replaced it even though they didn't have to. I have used the replacement for around 2 months, and it started to fail just like the first one about a week ago. It has since gone back to working rather normally, but I know it won't be long before it fails again. Which is why I am now planning to just spend the extra money on a Provari Mini 2.5.
They are rather expensive compared to the SVD (around $160 for the cheapest model, without batteries/charger), but they come with a 1 year warranty (and you can upgrade to a 2 year warranty for $25) so as far as I'm concerned it's worth the price. If you are interested in checking them out just go here:
Provape
Like I said, I probably wouldn't have bought a Provari if someone had made this suggestion to me, but I figured I would mention it anyways.
As for the SVD, if you decide to go with it you will need to buy some batteries and a battery charger (and most likely some new clearomizers). Here is what I bought when I got my SVD:
1.
SVD Express Kit
2.
AW IMR 18490 (I got 2 of these)
3.
Protank 2 (got 2 of these as well)
4.
Nitecore i4 v2 Charger
If you do get a Provari, you would still need to get some AW IMR batteries as well as a charger. Oh and I still use everything from that list, except the first SVD...