I did a bathroom in summer of 2020 that similar-ish to what you're looking at (
Thread w/ Pics)
Total cost was about $18.5k. I did all the labor except for tile/granite. My tile also included the rest of the bathroom, and I replaced the vanity granite/sinks/fixtures, but didn't replace cabinets. I also moved drains, painted, reframed, added vent fan, moved lights, etc. If you're just looking at the costs of the tub/surround & glass, I'd say it was closer to $10k. Feel free to ask about specifics.