In Brazil you can still find sealed packs, but they are kind of expensive. The main place to still get cards is
https://www.bestdecktcg.com/?view=ecom/item&prod=140390. You might wanna reach the store owner and ask if he ships FoTR Portuguese boosters overseas. If it fails and you really want it, send me a PM and we can try to work out me buying to send you. The 40,00 BRL the store charges for the booster is about 8,00 USD. I have no idea about international shipping fees, but I'm pretty sure shipping from Brazil with insurance is on the expensive side.
There are places like the Brazilian version of eBay (MercadoLivre), but sealed packs are very rare.
PS: Ask the store before buying, because they might have Portuguese and English boosters.