Chain stores are notorious for housing livestock they "throw in" tanks randomly to make a profit. Plants, fish and shrimp alike suffer from this and its unfortunate. There's a nearby Petco close to where I work (I work at a LFS) and I get people in all the time complaining about how their tank has crashed (usually due to lack of research on their part and misleading info from the Petco clerk). Such a shame.
As for the bamboo shrimp, I fully plan on getting one or two for my 30g once it's established for a few months longer...such cool little guys!