OK... so...
Cig-a-likes have their place and some people do manage to quit or cut back. I got from 15 a day to about 10 before I hit the buffers (as we say).
There are some quite good ones out there. My favourite was a type called KR808D-1 which is kept charged in a little case that you charge up and then keeps your battery topped up. These are called PCCs.
The cost of an 808 can vary from $3 (a battery) to $150 (for a kit) depending where you buy. The biggest unapologetic SCAM in the e-cig industry is to sell these products from maximum profit.
The tobacco companies bought a lot of the cig-a-like 'brands'. So, I would not recommend these on price or quality (value for money).
You can count out Blu & Greensmoke straight away.
Mark 10 is just nasty. Vuse and Vype (if you have those) are equally detrimental to your $$ and your chances of quitting smoking.
Halo do a G6 model (basically another industry standard battery) for about 50% more than you need to pay. It's not bad, but it's not value.
The Joyetech e-roll has a loyal following. I never thought the atomizers were great, and preferred the cartomizer type (510 or 808).
Basically, they are great to try. Beware the brands that advertise themselves as the #1 brand or the 'best' e-cigarette as as sure as smoking will kill you, these brands have faked the internet to make lots of money from the newbie vaper.
I spent $800 to reduce from 15 a day to 10 a day.
Volt do some cheap starter packs. Apparently even V2 (yes, them of much cost and marketing spin) sell some cheap stuff through gas stations and supermarkets.
Personally, at an equivalent to UK prices, if you pay more than $20 to get started (a kit) and $6-$8 for 5 refills, you are being taken for a ride.
The self-proclaimed 'kings' of the cig-a-like, charged $149 for all-inclusive kit. Please avoid that fate...
If confused... just ask... we know all the tricks and cons.