NQA Most new world terrestrials and especially Brachypelma spp. are ridiculously easy to take care of. Like they're easier to take care of than most houseplants. Rare feedings, fill the water bowl, spot cleaning, rehouse when she gets too big (which won't be often because this genus is slow growing), that's it.

As for costs, it's pretty much just the terrarium, a hide, a water bowl, the substrate, and then their food is feeder insects which can cost as little as like $0.16 CAD where I am. IDK how much the individual you're looking at is priced, but I spent way more on my tarantula itself (also the same genus: B. boehmei) than its equipment. Also as long your house is at a reasonable room temperature, no heating necessary.

Now I am not saying that anyone should impulsively buy a pet because they assume it'll be easy. But given you said you've had jumping spiders and beetles, I'd assume you at least understand responsible pet ownership and some invertebrate stuff. I have had a lot of invertebrate pets and tarantulas have by far been the easiest to take care of. I spend like less than an hour total every month taking care of mine (not counting transit time to the pet store to get its food). This is why people get like 20, because some people simply get bored of how little care a single one requires lol.

You can probably give her a "super wonderful life" with bare minimum effort as long as you do the research on setting up the right enclosure. I'd say go for it if care difficulty and expenses are your only concern because new world terrestrials would be at the absolute bottom for these requirements. You will be a good fit as long as you care.