Go buy if you were waiting for an upgrade or sale to buy the standard edition.
Common Question:
*If upgrading, don't worry, you would keep all your stash items, money and stats.
*Black Friday has a 25 percent to 30 percent, but you decide if it's worth the wait.
*Don't buy or upgrade just because there's a sale, buy because you want/have time to play it. I waited for EOD discount for a month but now that there is a discount, I realize that I don't have the time or urge to play it like I once had.
(USD)
Standard $44.99 to $35.99
Left Behind $74.99 to $59.99
Prepare For Escape $99.99 to $79.99
EOD $139.99 to $111.99
Upgrade from Standard to EOD went from $95 to $76.
Source: https://www.reddit.com/r/EscapefromTarkov/comments/syyr3r/all_sales_20_off_currently/