Probably around $25 USD, you can add the membership to it.
i have a members rs account lvl 96 with 85 str 74 attk 71 def 79 hp 74 mining 70 smithing 79 fishing 83 wc 78 cooking 53 firemaking 50 thieving 68 crafting 37 fletching 70 magic 53 prayer 64 range 27 rune crafting 41 construction 38 slayer 12 farming 10 hunter 37 agility with 4.9 m and 100 qp and i wonder how much it would run for message me on here
I would give you 20€ for it
pretty rounded stats, 20-30$ maybe?