I got one from Wal-Mart of all places for $5. My ruger P345 fits it like it was made for it. I'm left handed and the zipper just happens to open from right to left so drawing is very simple and does not snag.
I used it all last summer and whenever I cannot dress to conceal. It must work fine since no one has "made me" when carrying since I carry my wallet and phone in it too. My mom is very gun paranoid and she has never noticed I carry.
In short, it saved me from spending over $50 or so...
