When I first played, taking the reduction in price to 20 made the cost infinite. Now it makes it free and 21 gives you money. 19 must be the limit.
Yup that's a bug, since the content is only up to meditation 10, I didn't even think of that possibility.
I have 85 meditation points on my savegame!
I was going to go for 195 (20 speed and 19 cost for each item), but I gave up.
