2slow2matter,
If you follow the link off of airfield models to the magnet source they have a page set up just for this. Here is the link [link]http://www.magnetsource.com/airfieldmodels/[/link] For 150 they are 55¢ each. The prices and stock # are listed on the link I just posted. When I called to order I talked to the guy for a bit as he got ready to place the order. I ordered 250 at the time and he went ahead and gave me the price break as if I ordered 500, which was 46¢ each. Since he did that I was able to afford a few more so I ordered 300.

Hope this helps

Ken