I bought a whole pile of the Cold Steel keychain knives for a couple of dollars each at a gunshow once. Some were the little push knives, others were little spear-point fixed blades. They were all so cheap because they had the day-glo pink and green handles, rather than the more gunshow-friendly taktikewl black. From the box, they were very sharp. However, the goofy serration pattern Cold Steel uses is more of a pain in the posterior to sharpen than it needs to be.
I don't have a single one left. I gave them all away as gifts to non-knife people, mainly women, to use as one would use a more conventional pocket knife. Especially when they have paid big bucks for manicures, women hate doing anything that might break off one of those long, lovely nails. The little fixed blades didn't have that risk.
They are okay knives. If they have a good price on them, buy several. Give some away, use the rest till they break.