It's pretty obvious that his 50$ discretion was going to be used on AS + bacter 100 and clear super anyway, and I don't blame him. He's said as much right in the thread, that if you were to get the bare minimum, get those.
TBH, there's not really any reason to use potting soil in nanos when AS is so readily available.
Doesn't matter if the AS is readily available or not, does it? Low tech is still low tech. I think there should be some more specifics about what this $50 discretion can and can't include. Rather, I think the entirety what we can suggest for him to use would be more adequate...