Hey eFour 
I have some sealed packs that I want to keep well, so I was trying to look on Youtube for ways to sleeve them, and there were only 2 to my knowledge discussing such matter.
Can you tell me how do you take care of your packs and sleeve them/store them?
Thanks a bunch
I recently started using ultra pro tarot sleeves and I really like them! Just been storing them in empty booster boxes so far.
Card saver 1 with a psa sleeve. Put the card saver in the sleeve then slide the pack in front of the card saver.
1- Great! I can find them here in UK Tryhardhere
2- Well, I can’t find someone selling them here in the UK Poke_Zach 
For expensive packs I’ve used the card saver and sleeve method. The ones I use are called ultra pro one touch resealable bags.
there are narrow zip loc bags, I’m gonna try them out
Yeah as long as they don’t move around super easy you should be fine. That’s how they’ve always been shipped to me so that’s what I do know.