Was picking up Sonic Mania Plus and noticed this was on sale.
I heard It's a really good game and I don't think I have seen it this cheap before so picked up a copy myself too.
Amazon has it at $68 and doesn't appear to be on the Big W website.
I asked the staff and they said it was nation wide.
there were 8 copies at my Top Ryde store.
Sale ends on the 6th of Jan so get in quick !
link for the photo.