Of course they used the ‘shitty coke’ for the art piece. They kept the good stuff for themselves.
Presumably made for an anti-drugs campaign? It says ‘a commissioned piece’.
As for the value, it looks about the size of a bag of sugar, call it 1Kg so at $60 a gram, roughly $60,000. Quite pricey but not on the scale of “for the love of god”.