Flir/ infrared cameras

Are cheap-ish infrared cameras worth it? Pic related (or similar stuff from various other brands or word-salad companies directly from China) is about 200€.
Is that good enough to find spots where my house is leaking heat or letting in cold?
Maybe checking my cabling that theirs is no heated up areas too.
Or is such a cheap, low-res device worthless?
I guess for doing IR porn, I’d need a better one, but for /diy/ that seems ok enough.>>2876346
Fuck yeah bro