If you're set on buying from a Canadian vendor, Canvape has IGO-W2/3/4's. They are very popular models.
https://www.canvape.com/ProductDetails.asp?ProductCode=IGOW4
You would also need kanthal wire for the coil (also canvape) and I'd recommend cotton (from balls) as the wicking material. Micro screwdrivers (phillips and flathead), tweezers, scissors (or nail clippers), and a resistance checker or multimeter. You will also need good IMR batteries rated for high amps (preferable 20-30 amps) - canvape has a variety.
I would highly recommend building a microcoil setup and MOST IMPORTANTLY that you be fully conversant in battery safety and rebuildable issues (e.g., shorts) before you build a thing. Wouldn't want you to inadvertently build a pipe bomb, and I suggest you start your building career with >1 ohm coils.
Now, having said all that, you
can order gear online from the US with no problems. Just keep the order to gear (not juice, to be safe with customs) and maybe get batteries somewhere else as they are considered a dangerous item by customs. I've had toppers and mods shipped from the US, the UK, Germany and China with no issues (and no duty or extra charges).