Nothing on the site jumps out as completely crazy or unbelievable, unlike some sites.
I have heard of some of the varieties before, so they don't seem to be made up.
Other than that I would not like to offer an opinion as to if "what you see will be what you get ", that is often a question in my mind buying seed or plants.
With vegetable seed at a lot lower prices, I am willing to take the risk, especially in a spring buying spree.
Even then I do wonder if the seller knows much about variety isolation and cross pollination problems ie growing lots of Chilli Pepper varieties and selling seeds.