In the FAQ for the Premium Membership (QFC: 15-16-718-65225664), Mod Slayer said:
Q: Why are there no RuneCoins on the Premier Club package this year?
We looked at what players used from last years Premier packages and we did see that although some people did use up the RuneCoins which came with the package that the significant majority of players still have these left over.
We have introduced a number of options available to players on the Solomon's store available to buy with loyalty points, the most recent retro overrides as an example.
We will continue to add a number of items to the Solomon's store which you will be able to purchase with loyalty points.
Also you never know what else we have in store for next year, new auras including tier 5!
With Bonds now in game players can use their ingame wealth to convert Bonds into RuneCoins which they can use purchase those which can't be bought with loyalty points alone.
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Jagex's response can't be more ********. i used up my runecoins the day i got the package. Some people have a lot of left over runecoins because they chose to save it for future cosmetics, it is ridiculous how they are using this as an excuse to downgrade to loyalty points instead. i still have around 200k of loyalty points, i don't think i would want any more of these points because they made it extremely limited on what we can spend on.