Just received today. Unboxed her before I had to leave to go to work (night shift). I'll try to get some ventral shots tomorrow when I get home.Suspect?! These are pretty darn easy to ventrally sex at this size. If you posted a clear photo of the underside of the abdomen to the Epiandrous Fusillae gallery, I bet someone could tell you in a few minutes what you've got.
What are the circumstances of the purchase that you'd take an 8.5" unsexed spider? It's a very cool species regardless and you'll enjoy the spider a lot.
Guy online put up a list of Ts for sale and she was listed as unsexed for $150. I asked him about it and he said he was about 90% sure she's a female.