Regular non-event packs (good standard to compare to)
>Monthly Card
>$4.99 for 12.1 rolls
$0.41 per roll

>Monthly Headhunting Pack
>$25.99 for 22.6 rolls
$1.15 per roll


EVENT PACKS
>RI Upgrade Pack
>$9.99 for 8.33 rolls
$1.20 per roll

>Baizao Sightseeing Pack
>$29.99 for 27.2 rolls
$1.11 per roll

>RI Resource Pack
>$49.99 for 37 rolls and 10 blue rolls
$1.35 per roll, $1.06 per roll if you value blue rolls (I would not)

>RI Special Pack
>$29.99 for 28.8 rolls
$1.04 per roll (WOW WHAT A BARGAIN, THAT'S BASICALLY A DOLLAR PER ROLL!)


I recommend buying the RH Special Pack and the Baizao Sightseeing Pack, at the minimum.