Just some minimal "greenhouse tubular heating", like this;What kind of heating are you looking for?
I've found that my lights is eminently qualified as "heaters".......Add up the total wattage of all your gear, lights, fans, air pumps, dehumidifier and everything else, the total wattage is the amount of heating you have at hand, then ask yourself if you really need more.
Yeah, I can understand your hesitation!
That, amongst other things is the reason why I much prefer buying things in person from a growshop, but I do acknowledge I'm very lucky to have one close to me, I know not everyone has that luxury. There's also the paranoia aspect lol, I want to avoid as many online purchases as I can, but of course not everything can be picked up in person so I hope your future orders are much less stressful!
Plus - Fuck them.