New Trader, looking for PC on my items

Hi all, new trader here having recently been made aware of the value of Runescape assets.

looking to get started but have no idea how much my items are worth in real world cash,

I have:

Red Santa Hat

Green H'ween Mask

3 veteran accounts mid-high stats all with yo-yo, rubber chicken etc and due to become 20 year veterans in the next year and a half, are these worth anything rn or worth holding on to until they hit that 20 year milestone? (all 3 are my personal accounts from back in my 2003 playing days)

Thanks,
Lothea

 

Assuming this is RS3?

Santa and green h'ween like $150 - $300

The accounts can sell anywhere from $75 - 300 each and even more in some cases