It is tough to find good Biltong.
My ex was South African and we went to Cape Town and Johannesburg.
In the shopping malls over there they have got Biltong stores where the space is basically taken up with a clothes line with rows and rows of steaks all in various stages of "conversion" to Biltong.
Amazing sight to see, amazing smell, awesome taste when fresh from the "line"!
They also sell it in a variety of ways, either as a whole "steak", and you will often see people buy the whole steak and walk around with a small pocket knife just cutting off pieces to enjoy.
They sell it as sticks (stokkies) like the third picture below. Tends to be drier and more spice surface.
And lastly is shaved, basically they take the steak and shave off 2-3mm slices. They take a pinch and kind of chew/suck on it like chewing tobacco, except you don't have to spit it out!
Another great delicacy from there is Boerwors, and the dried version, Droëwors