It hasn't been made in a few years, it saw very limited distribution, and it probably doesn't age very well. I don't recall ever seeing one pop up in the trade forums in the last year or two, or eBay for that matter. Maybe check the beer's gots and just start blasting people with some quality offers? It is rare but if someone still has a bottle I can't imagine it would be too impossible to move since its more of a novelty beer.
How do you check gots? When I click on it I get a message "Trade page is currently down for updates."
I had Liquor de Malt a couple times and thought it was pretty good, but personally I enjoyed the old Rogue Dad's Little Helper malt liquor a whole lot more. That might be easier to chase down (of course, it doesn't come in a sweet 40oz container with a stamped paper bag).