SO apparently if you add enough instant coffee to make it taste like a "strong" cup of coffee... its gonna contain way more caffiene than you expected. Didn't realize it until my hands wouldn't stop jittering.
It actually tastes pretty good but yeah. Don't be like me. Looks like I'm definitely staying up until midnight.
Moka pots are also somewhat popular where I am, and it similarly uses pressure, and generally costs less than $40.