Recommendations for affordable flat irons for medium thick, medium density damaged hair?

I’ve been straightening my hair with a flat iron pretty regularly for the past couple years. I try to mitigate damage and give it breaks so my hair isn’t actually fried to the bone but I fear my current flat iron isn’t doing me any favors there…

Is there anything affordable (preferably under $60 but I’m flexible) that would straighten thicker/denser hair reliably below 375° with minimal frizz? Or should I just stick it out till Black Friday and get a nice one or something?