I’ve been selling my fish in bulk solely through the trade rocket and coming away with 300,000-500,000 each time selling mostly C and B Class, stacks are usually between 3-6 fish.
I can’t really tell because I get a bulk price but this seems better than the trade terminal prices you guys are showing for individual fish ;0;
I’ll double check I’m actually getting that amount on the next batch and it’s not just showing me the 100% trade price.
I’ll do a second lot where I wont send the rocket, and I’ll go up with same fish and see what I get from a personal delivery too.
Will return with screens 07
edit:
I aint even coming back with screens, something is up with the trade rocket prices 
1 Star Economy // Mercantile // Sell: 69.6% // buy: -19.9% // Failing
Stack of 6 greenscale bloater at total cost of 18,000 at baseline market sale price from info on item hover.
Rocket reports this stack will sell for 27,861 by itself. Showing similar boost for all other fish stacks.
Player Base trade terminal is coming in at 15,199 for the 6 greenscale bloaters at -43.7% market value.
Space Station is showing 17,000 for the 6 greenscale bloaters
Planetside trade centre terminal the price was 15,929 for the 6.
I went back to the trade rocket to double check I actually get the amount shown and can confirm I recieved 27,861 units for the Greenscale Bloaters.
If this is intentional to steer players towards a floaty nomad fishing hermit lifestyle then I fully approve.
Blast your fish into orbit people <3
(I checked the previous system I was fishing in, also 1 star economy but I was still getting great prices from my RocketFish)