That's the main question, haha.
If he says he earns 5 figures a month but will "only" invest like 100$ this doesn't add up.

So I doubt it will be $ or euro. Since he is posting in the Nigeria section (I just checked) I guess we have our answer. The problem though, 10000 naira is only 11$ .  That means even a 6 figures payday wouldn't be much money.

Anyway, it's always nice to hear stories from new bitcoin holders and supporters. Hopefully the support will only rise from here so that btc never dies.