Mother of God- NCIX's site is awful. They'd have to actually try to make it worse. Have they seen Newegg's site in the last five years?!?
I did attempt to look through, but I found exactly zero solutions that were mATX and had a decent (400W+) power supply from a reputable vendor. This Coolermaster
with a 420W PSU for CA$59.34 pre-shipping looks decent, but it is ATX. It just happened to fall into NCIX's mATX listing due to claiming to support mATX in it's title.
Might have a closer look at ATX cases instead?