I think people are underestimating the power of this card. Already, the setup rule really changes things, and I do think being able to save coin tokens can be very crucial, more crucial than some realize. And, yes, in engines, this card can work out nicely. So far, I am loving this expansion. And, I was one of the people who thought it would be possible to get tokens to spend even without mats.
Yes, it can work out nicely, but it also costs $5. And I doubt you want to mass it (e.g. over Market) in engines. If you need the flexibility to save up say $4 or more, you are probably doing something wrong. Note probably, there are certainly scenarios where this is helpful. But in the direct comparison to Market you are given up potential for 3piling, this costs most be considered. And, Market is already not the strongest card in engines, as you need lots of $1s to get somewhere.
I think there is more potential in BigMoney, or the "half-engines" that ST mentioned, maybe slogs, but +1+1+1 is not that strong in Slogs, and $5 is expensive there. Biggest influence is certainly the setup instruction, so I definitely agree with "So far, I am loving this expansion", even if the Bakery might not get bought that much.