[Crisp]

"Good" for an M5 would be $1,000 a month and zero down.

There's a lot to factor in though. If the OP wants to have competition pkg, and all the bells/whistles, then good is $1,200-$1,300.

I'm paying $890 a month for mine with an MSRP of $95,845.
Payment includes NYS tax (8.875%) and I didn't put anything down for cap cost reduction.

PS. I did ED for mine.