Just came back from a job interview on Nash St North in the Hammer. Between Barton and the CN tracks on the west side of the street there is an authorized Motorola dealer, I am guessing they sell antennas and maybe even radios to the "joe scanner" crowd that hang here.
In the GTA maybe Lakeshore Communications (which isn't near a lake) near PIA, Hutton White Radio in the Masterson/403 area of Miss might sell radios.
Like WZ said in an earlier post on this thread, there are Motorola radios can be used to follow trunked systems but you have to know how to program them, how to have these radios not affiliate or transmit, if it isnt done correctly you are setting yourself up for a world of hurt.
In my opinion Moto gear does sound better than any scanners I have had or used but if I had to pick a scanner or a Motorola radio I'd pick a scanner every time.