PS Plus

Good day, recently I came across amazon.com on discounts, in connection with the eve of black Friday - there is a discount on PS Plus worth it for a year there 40$ instead of 60$. And it is about 2100 3900 instead of from us. The code comes as a digital product and when you purchase you send it in the mail.

So the question is, will it work if I buy it, maybe someone bought already. I have installed the country Russia in the PSN, change the thought like that. What do you say? The price is tempting.

Here is a link to the store:
https://www.amazon.com/exec/obidos/ASIN/B004RMK5QG/?tag=toysj-20&th=1
And here's what I said there is a similar question, the answers say the opposite:
Amazon Customer answered:
Yes, of course. The redeems codes works for all countries.
Qahtan answered:
Location dosent matter, what matters is your account. Which region is it? If its not USA then it will not work.