It's most places.
never heard petsmart doing this cause i got 10 oto... i want my money back xD lol 10 for $10.80 not bad... and these are not babys too they are fully grownThey just had a buy4-get2 free sale so you could buy 4 Otos and get 2 free. Applies to any fish as long as it's equal or lesser value.