Yes, the Sig and Kahr are not on the list as they are out of my price range. I wanted to know if I missed any to be sure I covered all available that I could afford - which is in $300 ball park.
Kahr just brought out CW380, a less expensive version of P380. Its MSRP is $230 less than regular P380. Not sure what the street price would be, but much closer to your price limit.
I have absolutely no experience with Kahrs, but they do have very loyal following. Personally I would take the Sig, but it is definitely not a $300 gun and SA-only is not for everyone.