I donated 3 Crystalmizing chambers expecting their pre-EHSP value would be 2500 each. Instead, the total donation value was more than I expected, so I ended up with an emblem I didn't expect. Or else maybe I was having a little moment, distracted by thoughts of the new hell wine. Anybody have a clue more than I do?
ETA: Nope, my mistake. The shrine still gives 250 favor for donating a single Crys Chamber. Many thanks to all who thought about this and replied.