Anyways, I'm not too sure what pricings are so I could start off with:
Also depends on mmr and lp gainage.

Bronze 5-1 : $10 per division
Bronze 1-Silver 5 : $12

Silver 5-1 : $15 per division
Silver 1-Gold 5 : $18

Gold 5-1 :$19 per division
Gold 1-Plat 5 : $25

Plat 5-1 : $26 per division
Plat 1- Diamond 5 : $70

Will negotiate.

I prefer not to go higher than d5 because it takes quite some time.