They are common here in my area. A lot of people think they are rare but in my area, they are available at pet chain stores and fish stores that specialize in oddball fishes. You can buy them online also from a vendor here.
Right now in my area, I can buy like 10-12 of them from 3 different shops, price ranging from $4 to $11. The $11 place is marking up really high for some reason.
Right now, I can buy them online at two places, price ranging from $2 to $7.50.
In my opinion, it all comes with what you think is uncommon and what sources you use to find fish. A person's opinon on what he thinks is uncommon is common to others. So this is my opinion on how I see this fish. Others might have a different opinon but this is what I am saying and believe.
Cigar shark is also the common name and this fish goes by other common names also such as mad barb or golden shark.