I had called the Murdochs in Hamilton back when I was looking and they were on backorder and taking more orders. RDO in Missoula, said backorders were 2 months out. I haven't been in either store recently, but believe that is still the case. I just got lucky when I found and purchased mine.
Since the weather has gotten better here, my 400c has been impressing then hell out of me. Not for long bars, but with a 24" B&C it is incredible. If you want a 500i and don't need to run a long bar, aim lower and the 400c will fill your needs and then some.