Noble Brigand would have been fine with "when you buy this, you may play it". Getting $1 back on buy wouldn't make the card OP.
This was talked about earlier in the thread... the power change seems fine, but playing a card before you gain it (and then gaining it after) seems very weird.
Is it that much more weird than some others things that already exist:
Vassal, that plays (and puts into play) a card from Discard
TR an Acting Troupe, which then plays a card that's in the trash.
So just seems like you would buy this, play it (moving it into the play area), then gain it, but it would stay in play area due to Lose Track / Stop Moving (I forget which name we like better these days) rule. Then get cleaned up like normal.
Alternatively, it could be (like Awaclus suggested):
When you buy this, you may play it from the Supply, leaving it there.
In this case, buy, play, but not move, then gain, as normal.
Actually, I think I prefer this alternative.

Why is everyone trying to come up with more alternate wordings? The card is being printed - it's not going to change.
I mean, what else are we going to do during this pandemic?
