Huge Briggs(?) spotted in pet store

oh, sorry I did not have a camera with, and they are far away now. If I see them again I promise to take a pic. Basically I just wanted to know if there is anything that looks exaclty like a briggs but closer to size of a cana.
I wanted to get some so bad but my hubby was with and wouldn't let me. They were only 2$!
 
Haustrum might be correct?

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