Good points on the preferences thing. As this is his first knife though, I don't know if he'd much know if he prefers tip up vs tip down, etc. My preferences are actually for tip down (because I rear pocket carry). So maybe the OP should buy a knife that is drilled for all clip locations, so he can learn his preference for the future? In that case, the ESEE Zancudo/Ontario RAT 2 are looking like good contenders.
Also, FWIW, there is non-stainless version of the CRKT drifter (can't recall if its plastic, or G10), which helps with the grip.
Ha, I was thinking the same thing

. I'd hate to see what a $300 can opener would look like (as a dedicated device, not a knife).
And you know what, I've never opened a can of anything with a knife. When I'm at home, I use the ones we have there, when I'm camping... so far I've always had my multi-tool or a SAK with me, so I've just never tried it. Maybe I should some time, just to figure out how.
These are all excellent options. I almost got the Boker Trance a while back. And the UKPK is the first one I think of when I think of a more typical clipped folding knife without a lock.
Also, I had no idea they made a subcom without a lock, great find

. And yes, subcoms are small, thats kind of the point really.
Kabar makes a Dozier model with no lock (somewhat hilariously called the "Big Easy") that easily fits in the price range of the OP (quick looks shows its ~$23). I have no experience with it though.
Also, Svord Peasants are great little knives, if you're ok with the somewhat less than stellar blade finish when you get them.