Here, for reference, is what a "stripper M4" would cost in the US. $65,125 MSRP.
At that price, keep in mind, you conspicuously don't get leather, 19" Wheels, or the good stereo, let alone any of the technical toys. So it is possible to undercut a highly optioned 435 with a stripper M4, but that M4 would only appeal to a certain kind of buyer.