Each Card you donate is worth some Material Points.

Players have to done a at least of 490? points to have a chance to get a limmed girl.
1x R-Gacha is 550 points and have around 1-2% of giving the N-Gacha.
3x R-Gacha is 1650 points and have around 2-3% of giving the N-Gacha.

Materials Material Points
Pero Coliseum Ticket 2
Candy 2
Pink Key 2
N Wild Card 1 4
Gacha Ticket 4
R Wild Card 1 10
Elixir 10
Sexual Energy Drink 20
SR Wild Card 1 35
SR Wild Card 3 55
PeroPero Radar 80
Peronamin Half 130
Pero Pudding Half 130
SR Wild Card 5 210
Silver key 210
PeroPero Glasses 550
Peronamin 550
Gold key 600
R Gacha Ticket 650
Pero Pudding 650
Card Reveal 1100
EX Wild Card 1400
Event Gacha ticket 1400