I was just wondering how much the prestige Aatrox skin cost and found:
TL:DR Prestige Aatrox costs you $139.46 AUD
The best deal for prestige points is the Blood Moon Capsule Combo at:
168.75 RP per PP (Prestige Points)
Ordinary Mastery Work Chests:
225 RP per PP
Mastery Work Chest Combo:
173.0769231 RP per PP
Blood Moon Capsule:
187.5 RP per PP
If you need 100 PP and it costs 168.75 RP per PP. 100 x 168.75 = 16,875 RP.
Which means that, if you were buying the $100 AUD RP combo, $1 can get you 121 RP so 16,875 divided by 121 = $139.4628099 AUD to get the Prestige Atrox skin. Ridiculous right?