Where can I get sashimi-grade fish in philadelphia for a reasonable price?
Ippolito's at 13th and Dickenson is my go to (you can pre-order if you want something specific) but if you tell any trusted Fish monger what you are doing they will point you towards the best they have
I get sushi grade fish from Otolith. They have a stand at a bunch of farmer's markets, you can check their website for information - http://otolithonline.com/. It's sustainable seafood from Alaska and delicious. It comes frozen so you know that the fish is fresh. I defrost the salmon and just cut some slices. It's so good with ponzu sauce. Be careful when you buy at a fish store since it could be sitting for days... I don't trust Whole Foods or Reading Terminal.