Need PC on my range tank cb 98

Hi I'm new to Scythe and I've joined to sell my account. Could someone give me a price check on the value of my account.

My combat skill levels are: 99 range, 88hp, 70 att, 70str, 68def, 63prayer, 63mage, 56 slayer and 31 summ

My other skills are average includes 70 fletching and cooking

I also have just over 300m worth in bank and full void. My most expensive item is my santa hat.

Also, can anyone advise me how to sell this acc as I have no rep so I don't know hard it's gonna be. My reason for wanting to sell is because I've got too much schoolwork in sixthform so I don't have much time and, cause the new Call of Duty is out

Thanks