Gosseis are very colorful and beautifully marked corys that are similar to the C. seussis, but the gosseis have more rounded and shorter noses and the seussis have longer ones. .
The thing about corys is that price often has little to do with the beauty or scarcity of a particular species. While the price I paid was not really much, they are just not very often available. I missed buying some once and it was months and months before I had the opportunity to buy them again. Then, as my luck would have it, they weren't in the best of health.
I guess what I am trying to say is that if you see a cory you like, if you can afford it, get them while you can.