Good news everyone - it's time for more extra bonus RP!
Here's Hippalus with the details ( from the NA version of the post ) :
"Summer's here! When you need a break from working on your tans or chillin' poolside, we've decided to offer another extra bonus RP promotion to celebrate the season! You'll get extra bonus RP when you purchase RP from now through July 12 at 11:59 PM Pacific.
Here's a breakdown of how much RP you'll receive for purchases during the Summer Bonus:
$5.00 - 650 RP
$10.00 - 1460 RP (1300 + 80 standard bonus RP + 80 extra bonus RP)
$20.00 - 3000 RP (2600 + 200 standard bonus RP + 200 extra bonus RP)
$35.00 - 5450 RP (4550 + 450 standard bonus RP + 450 extra bonus RP)
$50.00 - 7900 RP (6500 + 700 standard bonus RP + 700 extra bonus RP)
$100.00 - 17000 RP (13000 + 2000 standard bonus RP + 2000 extra bonus RP)
Extra Bonus RP does apply to prepaid cards (the $25 card is worth 3750 RP) but does not apply to mobile payments.
Take this chance to pick up your favorite champions and skins and enjoy the summer fun!"