I got great advice and recipe ideas from SErs when I posted this, and here's an update.
I followed dbcurrie's advice and called local garden shops near bf's parents' house, and found one that had a tree. I bought it over the phone and told them that we'll be picking it up before Christmas. But my grandma passed away and I had to leave everything (including pounds of butter for cookie/candy making) and fly to Japan. My bf was in charge of picking up the tree but the store closed before bf got there on 24th. Then I flew directly to bf's parents' after Christmas and we picked it up and gave it to bf's mom as a belated Christmas gift. It's currently sitting in her sunroom. Hopefully the tree produces fruits without much trouble...fingers crossed!