Any FRN handled knife with a decent price - the Dozier, yes, the Griptillian, no. It's not that the Grip is a bad knife - just out of line for something with a mass produced injection molded part made for pennies.
Tenacious, Vex, and Vapor for imports. Great knives, great prices. Had they been US made, you'd have to add $30 to each, and some of that is marketing puffery because of the Made in USA claim.
On the other end, any S30V Ti framelock under $130. That can get you a Buck Mayo TNT, which is a great score compared to $400 and up.
Any Opinel under $10 - why I don't own more I don't know. They are easily modded. Using the same blade with a milled G10 handle, clip, and auto rotate collar to lock would be nice. Cold Steel didn't do a bad job with theirs.
Almost any reasonably priced TiN/TaN treated knife is a great bargain, simply because the stuff never wears off in abrasive environments and keeps looking good. No paint, gun coating, or teflon will. Next is DLC, which will blow a plain blade out of the water for slickness and finish. DLC approaches diamond in hardness and allows the underlying treatment to shine through - whether brushed or stoned. We've yet to fully explore it.
Of course, any $1.95 knife from a check-out counter is a bargain, and you get exactly what you pay for. Some aren't too bad.