Well ( other than purchasing used ) , for that price range and the trunktracking features you want , you'll have to plunk down a few more bucks and consider the BCT-8 from Durham. That's a fair price for the features it has. Look at the link:
Have you considered looking on ebay (search both .ca and .com) for some of the scanners mentioned above? For example a Pro 2051 trunking scanner (they are identical to a BCT8 and will let you hear the FD and EMS you are looking for) seem to be in the $100-150 range.
As with all ebay purchases though, buyer beware.
If you want to listen to Belleville Police and the OPP. you will have to have a digital scanner .The Radio Shack Pro96 or the 2096 base set are options . There are also several Uniden digital scanners also that will fit your bill .The Unidens tend to be more expensive .I would look for a good used scanner from this site or Ebay is also an option .
If money is an option, you may want to consider purchasing a scanner in the U.S. Not sure if you are planning any road trips this summer, but you can save quite a few $$$ if you purchase south of the border.
For example, you can pickup the Uniden BC-246T for $203 US = approx. $230 Cdn (no taxes)