From the marking on the severum, it is pretty good quality. Once that severum grows up, it will look stunning if taken care of properly.
I can't say for sure that is GREEN severum from the color of the pic. Also the fish being still too young to tell for sure that it is GREEN.
Severums might be very common, but they have different sp. For instant, RedHead Severum isn't very easy to get a hold of, unless you know someone who has them. There are some other severums that have amazing coloration and possibly can't find them in LFS.
Same with Convict. Standard Convict just have gray background with black stripes (can find in any LFS). However, Archocentrus sp. 'Honduran red fin' (convict) isn't as common even though they breed like crazy like any of the standard convict.