For $400 you have a whole world out there. Check out clearance items from Alden in the US, and any number of makers in the UK.: discounted or entry-level Church's, Alfred Sargent, Tricker's or Crockett and Jones can be had well within that, and full price on many Cheaney, Barker and others give you plenty of choice.
All have a brilliant range within your budget if you like the English makers, and I've personally ordered plenty from the first two, and their service is excellent.
Going more exotic:
Spain: www.meermin.es (cheap, but can take a long time)
www.carminashoemaker.com (just about within your price)
or if you're really into something new:
www.vass.cipu.hu (Hungarian, brilliant, read the threads for sizing tips and you'll be just a little over budget for pretty much anything yo want)
www.edetal.sg (Singaporean, incredibly priced and good quality, but limited range and sizes)
If you love the Allen Edmonds or just don't want to risk the unknown, go for it. But there's a whole world of shoe addiction out there waiting for you.