To be honest, I don't think it really matters how many pages there are. Look at the competition in the first few top slots. Are they strong sites? If they've got a ton of
pr and lots of links, it's not really going to matter how few pages there are. Take the keyword, "hand cranked ice cream maker," it's got a exact match # of competing pages of 19,200. The top sites are
pr 3 with lots of authority and links. It's not impossible to knock em out of there but rather is it worth the effort? The google adwords keyword tool shows only 390 searches for that word per month.