It is rumored that the national pastime in Bulgaria is stealing. They don't steal the toilet paper because they need it or cannot afford it. They steal it, because that way they don't have to pay for it. It's just the satisfaction of acquiring an object they didn't have to pay for, however insignificant or inexpensive the object may be.
They have this saying in Bulgaria: "Авантата е чиста печалба". I will let your other commenters try to offer the best translation for "аванта", because all the entries I found list it to mean "scrounging", which I don't believe to be a valid translation. Anyhow, it basically means that anything you acquire for free is pure profit.