Same thing happened to me when I ordered something with equaly low value. I emailed him and he asked me to reorder it with extra $2 tracking.
What happens is he sends all of the orders with registered delivery and has that calculated in the price on flashlights but not really on smaller oredrs.
I’m not really happy with it but we have to understand he is running a small business and margins aren’t that big.
Anyway it should not allow you to place orders that gonna be refunded straight away.
Apart from that he is really reliable and extremely willing to help. Highly recommend.