What to buy new releases or older ones

Here my dilemma, I collect dc Bat fam tpb. There a couple of new releases this month. However I also really what to collect ASM Epic collection, some have been out a while but still in stock. I got FOMO for both. I'm assuming because ASM have been out a while, there less or limited stock as the new BAT FAM should be available at least for while, but what if they sell out. So many books, so little money 💰. What would you do?