My wife and I just completed a 12-night Baltic cruise on the Marina. Our previous cruise was a 12-night Med cruise in the summer several years ago on the Celebrity Solstice.
I honestly have to say that the experience was as about the same for both cruises. That is, until you compare prices. The Med cruise was about $2500 pp. This one was over $7000 pp. So, the price performance ratio was WAY out of whack.
For this cruise, we were on the Concierge level, but didn't really see any substantial difference between what we just experience from what we had on the Med cruise. For this cruise, we had some friends on a lower level and, after comparing our room to theirs, didn't really see any difference, except for a few better toiletries.
The food and wine were very good on both cruises.
The on-shore excursions were, as per most cruises, a rip off. With a little homework and research, you can book any number of excursions on the internet for a lot less money. On the Med cruise, we often walked off the ship, jumped in a cab and had a great tour of a wide variety of sites for considerably less money.
The last negative is the internet charges. This was true on both cruises. I heard this complaint from many of the passengers because they didn't understand why the charges were so high. If there is a hidden reason why there are charges, it would be nice to hear them. If it is because the ship is charged for satellite usage by the minute, then I might understand. The funny thing is that Oceania has published in their 2016 catalog that the internet would be "free". However, when comparing this year's pricing with next year's pricing, the costs have gone up. Hmmm...
To answer the question if this cruise is 3X times better (based on price) than our Med cruise, the answer would have to be NO.
Ocenaia has a really good marketing department which entices you to spend more than you really need to in order to have a great cruise to a lot of interesting destinations. The choice is yours.