Intended use will help....survival/Bob knife the Becker bk2is nice....dirt cheap is the condor bushcraft or a mora......
Are you using it on your safari? Which chores will it need to do?
My favorite cheap knife in my stable is my Cold Steel G.I. Tanto. Nothing fancy, pull the plastic scales off and wrap the handle with paracord, and enjoy a heavy, cheap knife. If you ever break it, just toss it and buy another.
Amazon.com: Cold Steel GI Tanto Knife with Secure-Ex Sheath: Sports & Outdoors
If we're talking ultra low dirt cheap, it's tough to beat a Mora.
I'm taking it, yes, but there are no chores. I actually want to purchase several. I've been told there's no real need for it, but anytime I go out in the bush, I want to have at least something. There's two reasons I want them to be cheap. First, getting luggage stolen there is a fair probability. I'm not putting something expensive in my check-in bags. Secondly, I intend to leave them with the hunting guides. It was recommended to give them something like this because they have a hard time getting knives and such.
I found a couple nice looking SOG folders for 11 bucks for a 2.5" and 17 bucks for a 3.5". Unless someone shows something better, I'll probably pick up a few of those. For me, I want a fixed blade. Again, though, I'll be leaving it behind when I come home.