I contacted Nick a couple of weeks ago regarding an order download issue and he got back to me within ~48h. Make sure that you follow the instructions for emailing him (use "Question to asileFX" as subject to avoid the spam filter).

If you want to make your own "real trees", asileFX also sells an outstanding leaf texture collection with high res leaf images plus bump, diffuse, displacement and transparency maps:
www.asilefx.net/catalog/product_info.php

As far as Cornucopia items go, I can highly recommend the "Incredibly Lush" series from Linda. They are not made like the "real trees" but they are of exceptional quality and stand up very well in close-ups.

Ciao
TD