I was going to write a more extensive post on this, but then I became ravaged by sickness! In short, I did an ad for Hunting Midnight and put $20 against female English-speaking paranormal fans in the Philippines as well as $20 Canada/US. Long story short, it was less than $0.30 click for overseas and way more in CA/US.
The “local” play didn’t even consume all my budget before the timeframe ran out, indicating that my bids were way too low in general. I have to dive deeper into the results to see if there was anything else to glean, but the main lesson is that it’s a lot cheaper to buy impressions in the Philippines, heh. (I chose the Philippines because Wattpad has a big fanbase there and I figured there’d be more traction for something with Wattpad branding on it.)