Theo, I figure that at 5 bucks you'd probably lose $10 to $20 per set. Consider that you'd have to have finished edges even if you make the board of painted ply. You'll need to find a dense hardwood dowel so you couls stamp some sort of logo on each checker piece, then there's making a jig so the stamp is properly centered on each piece, then some sort of package, and child safe paint all round. Plus an hour or so per set to make them.
And knowing you, Theo, you'd probably want to make the board like an endgrain cutting board out of exotic wood. You could make a large number at once and resaw thin pieces, but they'd need to be glued to some backing for strength.
If you're going to donate these, great, but the mistake everyone makes is to charge too little. No one values cheap stuff and a rediculously low price screams cheap.
I'd not buy a chess set like this, but it would appeal to someone as a decorative piece, particularly because each piece has legal moves printed on top.
The more I do, the less I accomplish.