Non profits vary widely enough that you see places that can only take volunteer developer time and maybe provide some sort of tax benefit, maybe not, and places

Non profits vary widely enough that you see places that can only take volunteer developer time and maybe provide some sort of tax benefit, maybe not, and places that pay something approaching market rate. What's important is that you feel fairly compensated, and that you don't have to fight for that too hard, so that your income continues to grow.