+$1 can be priced at $4. But it overlaps with both Peddler and Tournament, and is less fun than either.
+$2 can be priced at $6, of course. Boring? So is Bazzar, Festival and Market. Grand Market is as boring once you buy it. But we don't really need more vanilla cards anyway.
+$3 is just impossible to balance.
The ones with on trash abilities are often useless. If you love Rats you might like these, though.
The on-gain one is OK, I think. But it's not the kind of very lovable card either.