Mike, Michael, those pro shops in TA doesn't sell bulks of Tri-X unfortunately (at least at the time I was inquiring), and do nto intend. The only bulks were available are of Tmax (100 or 400, don't remember), probably Neopan (not sure) and probably Plus-X.
Having said that, 2-3 weeks back FotoFiilm got a large stock of Tri-X (regular, not bulk reels), I stocked up on some 40 rolls (and also picked by bulk ot Tri-X along with Neopan 1600 as an exchange of my Velvia 100 50 4x5 sheets pack over APUG).
But Mike, I'm not sure whether FotoFilm does shipments outside Gush-Dan area, but it they do - I think 40 NIS shipment for a large pile of film (Tri-X if you want) isn't a huge permium (while they sell 36exp. roll of Tri-X at 13-15 NIS).
If you really lust after Tri-X, I'd probably, being on your place, call them up and inquired...