In Australia, the PD label boom hit around 2003 here as various budget labels got a kick-start by issuing various PD "classic" films and of course, PD cartoons.
According to Screen Australia, Payless's "Cartoon Mega-Stars" series sold extremely well, with the Bugs Bunny/Daffy Duck "and friends" releases making the the top 10 most-sold children's titles of 2003. The Porky Pig ones even had some 70s colourised versions!
Flashback went a step further: Their "Cartoon Classics" series contained pre-1948 shorts [even those in copyright] and pre-1948 Looney Tunes shorts only. No ring titles included. When they were reissued in 2005 with new cover art and as a 4-disc set with all 12 volumes [excluding the Superman one], the 4-disc set hit the top 5 most sold titles.
Magna Pacific did what Flashback did, but mixed in other Aussie-skewing shorts like the Pink Panther into them.
Most other ones issued the bare-minimum PD Looney Tunes shorts so they're not worth mentioning.