pc on crystalline

hi, i wana know how much money i need to save for a crystalline can u pc the folowing:
purp req8 14^50
req914^50
req10 14^50

gold req8 14^50
req9 14^50,15^50
req10 14^50,15^50
req11 14^50;15^50
req12 14^50,15^50
req13 14^50,15^50

i couldent find a list with prices for a crystaline, only the 'rare skinne item list'
but that only mentions 15^50 golds

purp:
r8 - 500k
r9 - 350k
r10 - 225kish

gold:
r8 - 1mil?
r9 - 14^ 900k : 15^ in sticky
r10 - 14^ 800k : 15^ in sticky
r11 - 14^ 650k : 15^ in sticky
r12 - 14^ 550k : 15^ in sticky
r13 - 14^ 475k : 15^ in sticky

i may be way off, so get many more opinions.