You might want to look at the location which 1st provides the best condition fish, and then the best advice to help you.
Lfs can be a really good resource to help you, and getting their good "free advice" makes up for often an additionally more expensive fish. Especially when starting out, getting good advice is critical to the happy and healthy aquarium.
You want to look for clean tanks, not a bunch of dead fish all over the place. Fish do die frequently after being shipped, that is not unusual. Are the fish looking bright and swimming curiously and have nice looking fins upright and "happy" looking.
Are there any spots on the fish / Ich?
Fuzzy growths anywhere around?
Grey/white tank patches on fish near the ones you are looking for...???
Stay away and wait for a good batch.
I have got bad/sick fish from good stores and good fish from bad stores (I try not to do that any more).
Often it is better to wait a couple days after the fish arrive to the store after shipping to see if they stay well enough to make it through the first couple days.
Side thought:
Can you slide in an additional filter pad to the filter compartment?
That filter is a minimal size for your tank. And needs to have more room in the filter pads to build up as much BB, why I wonder about adding an additional pad if possible.