The pinball market in Australia is booming and is still very very healthy. Its normal for the market to ebb n flow like the ocean.
People bringing in containers have most of the stock pre-sold or sold soon after. Almost every pinball collector "has a machine on the way or just around the corner" to add to their collection. Everything sells at the right price.
Champion Pub doesnt have pop bumpers from memory, and some people "have to have" pop bumpers on a pinny. Its funny that titles without pop bumpers tend to be loved or hated, but can be difficult to sell sometimes. I have included a photo below for the Champion Pub title. Its an acquired taste but still a very nice machine when in good condition. Junkyard and Champion Pub tend to be very similar in money terms.
http://www.ipdb.org/showpic.pl?id=4358&picno=12503&zoom=1