Ballbreaker by AC/DC debuted at #4 on the album sales chart.
There's nothing particularly special about this album. None of the songs are amazing, the lead track Hard as a Rock was the best performing single and only hit #33 in the US. That being said, none of the songs are terrible, which across a whole album is somewhat unusual. That's probably because the band had over 20 years of experience.
As far as it goes, the market agrees with me. Next week the album drops to #9, then #12, and so on. This is a common pattern with older, established acts on the charts. They sell well to start but there's no long tail of people discovering them keeping the album sales high.
If you're into AC/DC, check it out, but don't expect much.