Posts are going way off topic, could we please try to not hijack Marks post?
Btw saddlespotloachboy, more useful posts rather than chat like lines would be appreciated.
Mark, although bristlenose plecs are concidered peaceful fish, like all suckermouths they can attack the slimecoating of other fish. It's mostly flat bodied fish that are at risk (Read: fish like angels & discus). Though the bristlenose plecs aren't exactly known for this, they tend to do fine with most types of fish =)
The price really depends on where you live. In most places in england the price seems to be around 5 pounds, where as in Holland it's quite difficult to find them, and when you do it tends to be around 15 euros or so. It also really depends on the shop, it's best to look around in your nearby fish shops and see what the average price is.