My experience with the marine center did not go well.
I ordered three wrasses and a blenny. I received a box with one beat to hell but live blenny, and one really dead beat to hell wrasse. There was a lot of empty space in the box and it looked like the guy forgot to put the other two bags of fish in and they rolled around in shipment alot. They were packaged up triple bagged with thick bags, but I was shocked at how small the bags were.
Then I called them and they sent out the three replacement wrasses and told me to send the dead wrasse back in a baggie of salt, which I did the next day. I went and picked my box of wrasses up from the shipping facility on the morning they arrived, and they looked like they were shipped with much more care this time, they had much bigger bags and lots of water, but I still had one dead wrasse, and two barely-clinging-to-life fish. One of those fish died during acclimation, and I did get one living wrasse out of the ordeal.
So I called them and told them about this shipment and the guy was rather rude to me. He got terse and said, "well, we haven't got back the first dead wrasse yet!" Well duh, I did what he asked and there hasn't been time for it to arrive to them yet. There were several comments made that implied I wasn't being truthful, and I found that very unpleasant to have to listen to as I was staring at a dead fish. I am not one of those types that gets harsh with folks over shipment problems, it happens, but I thought he could have had a little more sympathy.
I won't order from them again. My choice to get fish from the Marine center was based on many posts I have read from people saying they do a good job and are worth the extra costs, but I was very polite and calm with them on the phone in every encounter and just did not receive the service I felt that I should have received given the prices they charge.