Does it look like this one, only in smoke grey?http://www.aboutglass.com/biminiCD/7.JPG
I have a wine glass like this one, in smoke grey, which I bought as Bimini, and is very lovely. However. both Raymond Berger and I have researched this design, and concluded that it is not Bimini. It could be Lauscha from Germany or it could be Czech from the Zelezny Brod Glassworks.
If anyone has a catalogue picture showing where these were made, we'd be very interested.
There's an article about Bimini glass at http://www.glass.co.nz/bimini.htm
In general, if a figurine has breasts it is most likely not Bimini, because Bimini figurines were very abstract.
We have no idea of the value, but you can see them occasionally on ebay to get some idea.
I hope this is helpful,