Tessco isn't a problem. Just sign up and they'll let you in. But, if your order is less than 100 bucks, there's a 7.50 surcharge. Kinda' takes the wind out of their good prices and excellent selection.
That kind of looks like what I have been selling for two weeks. I'm not sure if there are any special characteristics of that antenna but it looks a lot like the Antenex DEXB902SM SMA. It is more like 3" although I think it is listed as 4" on the specs.
I might be able to get a couple more, and will know later today. If your interested watch this thread.