If it is not possible to get a prescription, in my opinion your best option is to get it on AllDayChemist. I've been using them for the last four years to get my dutasteride. AllDayChemist are well known for their legitimacy and trustworthiness.
The 5mg version of finpecia is called fincar, and a year's supply of fincar (90 5mg tablets that can be split into quarters to approximate the 1mg dose) costs USD $41 on AllDayChemist. Once you've placed one successful order, you can avail of a free shipping birthday coupon code that is emailed to you every time it is your birthday, and which can be used within a month from your birthday. I order a year's supply of dutasteride at a time, and I always order it within a month of my birthday to avail of free shipping each time.
If I were to obtain my dutasteride from a supplier within my own country, I bet it would cost me three or four times as much, and would be a big strain on me financially.