We made a decision to try an Explora Journeys cruise. We were comparing the Retreat with a similar Europe itinerary (and Oceania). It's port intensive and the ship seems to be a better option for rest and relaxation.
The retreat started at >14k for the Magic Carpet Sky and we reserved a Villa on the Explora II for about the same price.
I realize it's a new ship and we are early 50s and haven't had much exposure to smaller ships. We are well versed in Royal, Celebrity, Holland, and NCL suite products, and they were always fine for our needs. Now if we fall in love with a smaller and exclusive ship, we will probably try other cruise lines.
You are not alone noticing Celebrity pricing.