Once you have got alot instructee however reward seem hardly anything compare to time we spend answer them questions and show them around. If you forgot to collect your hardly exp reward in Runes of Magic, and they decide not to online anymore you will lose all of those reward.
You can get Bonus Jaden when they level from 120-150 both non-ascended and ascended. In this thread of the Inductee with 1080 Bonus Jaden reward hasn't spent a single penny on Marketplace items since he started that character. You don't need to spend runes of magic gold to get Bonus Jaden.
If you can direct them to Lil Helper and show them how to use that, direct them to the forums for when they have questions, help them get to level(runes of magic gold) 75, and help them do Tier quests, you have got a friend that will level to 150 for you. You help them level or they help you gain.
