All Bolts at my local MD dealer are $5k off MSRP before you even think about haggling. I just checked another local dealer, and they are advertising $6.5k off MSRP. From what I can tell, these are real discounts, and not "You need to be the 2nd born son of a GM employee that used to work directly under Mary Barra..." type conditional incentive.
So in MD, a $37.5k stripper Bolt could be had for $37.5k - $6,500 (dealer discount) - $7,500 (fed credit) - $3,000 (MD rebate) = $21k before TTL. Tack on another $700 in savings in the form of a Costco gift card (if you were a Costco member as of 1 Oct). And if you are willing to grind the dealer, I'm sure at least another $1k discount can be negotiated.