Store rices are insane. Wild aughts removed illegally from Brazil sell for about $180 in the states at about 2 inches or so. F1 fish which would be "legal" in terms of not being removed from the wild would run about $150 for 1.5 - 1.75 inch fish.
These fish are likely to be extinct in the wild in the not too distant future due to the Belo Monte dam project. Fortunately, over the last 6 to 8 years there has been an explosion in the number of fish keepers worldwide who keep and spawn these fish. I am beginning to feel confident that, when they are wiped out in the wild, they will live on in tanks across the globe and the species will not be lost to the hobby or the planet.
I can also tell folks that over the years of selling these fish I have never sold them at auction or to stores. I have always tried to insure the fish ended up in a proper stetting and hopefully one where they might spawn. I do donate fish now and then to causes which help out fish and fish keepers and they may use an auction to convert the fish into money they can use.
As for getting to see them, you have to work at it. Wilds are much more skittish than tank bred. They are hard wired to bolt and hide at any movement, so it takes work to be able to catch them out in the open in a tank. My method is to plop myself down in front of a tank and remain motionless. Of course, I also have to keep tabs on them so I will often be shining a flashlight into caves, crevices and under wood and into rock piles to spot them. At the peak of breeding years back I actually had 13 adults and 50+ assorted babies in a 30 gal. breeder tank and would have visitors asking why there were no fish in the tank.
Just a heads up to the Brits- there is currently a good group of 5 zebras listed on PlanetCatfish for sale from a source in Surrey. Bring a fat wallet if interested.