Goldfish Pagoda did have marine tanks but took them out because he could not get any stock. Same thing that put me off getting tanks in. I found out about Alois and that changed things for me. All you could get before was the dregs after other stores had taken the bulk and selection.
I think you should get a discount if you buy out of the box/bag. I have done this at other shops and not been given a discount.
Retailers need to make a good mark up on livestock. 100% mark up is fare. If one dies you have to sell one to cover the cost of the two. Sell a third and you are making some money to cover costs.
We are putting marines in our store for two reasons, one I love them, nothing in cold or tropical compare, and 2 point of difference. Jansens and Kings are 10 minutes down the road. Jansens has about 172 tanks (one of my spies counted them). We will do marine, if you can't beat em do something different. Will cost about 6K to set up four sale tanks and one display tank. Thats 12K worth of livestock sales to cover the tank setup. That will take years. So far the display tank is in and yes it is a nemo tank though not a AR380 nemo tank that some retailers have sold, but a 400 litre tank/sump system.
I have and intend to tell customers about this site, especially for marines. I would rather they go in with their eyes open.
A note on dealing with the "experts":
Was at a shop one day when they were putting new fish in the marine tanks. One tank had a nice Picasso Trigger in it. Guy puts a fish in and the Picasso starts chasing. My partner commented to the guy putting the fish in that it was being aggessive and she knows nothing about fish! He looks at tank and goes away. Trigger nails fish and bites it in half. Guy comes back takes out half eaten fish and adds another. Expensive way to feed a Trigger!
I would not expect livestock prices to come down more but hardware prices definately will. When a heater costs about US$3 to buy in China there is no reason for it to cost $20-40 here. Or the Queen Protien Skimmer for NZ$90-100 is US$3.15 or about US$6 with a pump.