The estimate was simply my mostly uneducated ballpark guess. I haven't involved any contractors at this point. Good to hear I can likely get it done for cheaper.
You think buyers would prefer a 2nd full tub versus a full size shower like this: https://www.menards.com/main/bath/s...5-c-5882.htm?tid=-7403605641668008314&ipos=19
Personally, I'd prefer the shower as we have a tub upstairs.
Absolutely a full tub is a selling point. Especially because you only have one. There is nothing wrong with that shower at all except it's for the lack of a better term.....generic. If you would prefer to go the full shower route....you may want to look into a Kerdi system with tile or stone. It will be more money....but those type of materials always add to resale. And depending on what type of tile/stone you choose....look great. Just my 10 cents because I have done many with Kerdi and/or made my own base. And I prefer the look. It's not for everyone I understand.