There's a flavor concentrate named Boba's from NOVA Liquides, a French company (available as of 2014, I think). It is sometimes available at
Vappora.com, but is currently out of stock, though other NOVA Liquides stuff is in stock there. It is also available from a few suppliers in Europe. I'm thinking about ordering a few 10ml bottles of it from a Spanish supplier, but the shipping cost is a bit steep - what with the current Dollar to Euro currency exchange rate, etc.
I've not tried it yet. Non-English reviews appear to be very good. The only English review I could find on this stuff was very good as well, but by someone who never tried the original Boba's Bounty. There is also the Arom'Team Bob' Passion concentrate flavor (their words, not mine) available from
Arom'Team, which is another French company. Reviews on that are very good too, but mostly in French, so I can't tell if any of the reviewers tasted the original either. It is slightly cheaper (in Euros), but I haven't followed up with how much they would charge to ship to the U.S.
The French appear to have really liked Boba's Bounty, and have put some strong efforts into copying its flavor over there, which seems to have mostly gone unnoticed here in the states. Sooner or later I'm going to try these flavor concentrates and report back my impressions - though I've not had the pleasure of vaping the original Boba's Bounty for many years now.