A vendor in Ratchet has been found that has several steps and requirements to unlock, thanks to Steelcurser and reported by Sarthe. Read all about it below or watch Sarthe's video on the vendor.
If you enter the inn in Ratchet you can find Grizzby standing by himself. It appears you need to have a certain amount of gold before he will even speak with you any further, saying that you are too poor for him.
If you have enough gold, he will offer a gossip box, where you ask him about his ideas for a new venture. After speaking with him, you can close the dialogue window and speak with him again to access three turn in quests:
After completing these three quests you will be able to purchase the below Runes, all costing 5g:
Find all the discovered Runes for all Classes in our Rune Guides below.
Class Specific Runes in Season of Discovery