When young Wizards first start out at Ravenwood School of Magical Arts, they are often excited by the many different spells to spend Training Points on, such as shields and magical spells outside their school of focus. We understand that as Wizards progress, they sometimes wish they could return those spells in exchange for their Training Points back. Well now you can!
Mr Lincoln in Golem Court will allow you to Spend Crowns to buy back all your Training Points and return all of the spells obtained with those Training Points. You can respend your new Training Points as desired.
The price in Crowns is dependent on how many training points you have spent.
Anyone can do this at any level. The main issue is that this costs crowns on a per training point basis. So, if you are a level 10 and you have only spent 3 training points then this is not a problem. But if you are a level 42 and have spent 12 training points then this could cost a bunch of crowns to reset.
I believe you have to be at least 10th or 12th level in order to trade in your trained spells for training points; and - IIRC - it didn't cost me anything to trade in two used training points on a recent wizard of the minimum level.
It does get quite costly the more points you are trying to trade in though.