Wendy, I bought a few in December for bread pudding, and I paid less than a dollar (U.S.) each and they were really fat, fresh, and moist but I cannot say if they were Tahitian or not. However, the aroma was absolutely heady. I think the bulk price was something on the order of $90 - 100 per pound but by the each it's negligible.
On our cruise last year the best price I saw was several dollars per bean and I wasn't impressed with the quality compared to what I can get at home. It just wasn't worth even the small effort of tucking them into my bag.
I noticed last time I bought extract here at home that it has become extremely pricey.