Seems like a decent deal. Kershaw is a decent brand. Not the best, but far from bad. I would put them below the likes of Benchmade, but better than Schrade, Buck, setc.
Other online retailers have it for $39, so $19 is great. I'm not familiar with the steel they're using (Sandvik 14C28N), but a framelock is better than a liner lock IMO. You could do a lot worse for twice or even three times the price.
It is interesting that they say it is made in the US. I thought Kershaw's stuff was all made in Taiwan or Japan.
Chris