The local ones are usually slightly different and have a straight pin body- that type won't work very well when it is time to remove them. I have found the factory type rivets at two places, one is Grainger:
http://www.grainger.com/Grainger/Push-In-Rivet-5MUF8And the other is Amazon:
http://www.amazon.com/Tusk-Kawasaki-Suzuki-Fender-Rivets/dp/B0039LEU0II have not used or purchased either one though so they may not be exact matches. The ones from Amazon are pretty reasonable in price ($5) but cost more to ship ($7). The ones from Grainger are come in a bigger package (25 vs 10) but may be cheaper because you should not have to pay shipping.
Brian
What is the part number of Push Rivet under the 2010-11 windshield...... Is there a after market equivalent that can be purchased locally?