Well I think DIY is cheaper almost anywhere. I'd imagine you can get many of the base materials IN your country, such as VG (vegetable glycerine) and PG (poly glycol) you want USP grade for both of those. Flavorings you can purchase separately, and if your favored e-juice doesn't sell flavors (some experienced DIY folks can help you here, probably) that are identical to yours, you can probably mimic them. Then you need some nicotine, which would be the main thing you'd need to import, I think, you may wish to start with one vendor and a small amount, I use Nicotine River as my supplier and I really liked them... You're going to want to check that a supplier will send to your country. Buy NO STRONGER than 100 mg/ml, as anything over that is a bit toxic, and you might even want to start lower, like 48 mg/ml or 60 mg/ml. If you like your results, you can then order a larger quantity of nicotine. You'll need a few bottles, beakers, whatnot, I wear gloves and mask but it's not really necessary with the 100 mg/ml I use, I just like to be cautious. Then you'll need a juice calculator which is actually very easy... You plug in the numbers after indicating how much e-juice you want to make and what PG/VG mix, as well as nic and flavorings. The DIY forum is a good place to start (it's a subforum of the general e-liquid forum).
Best of luck!
Anna