I did a little homework on Hop Heaven. It appears that the owner handles pro-brewing contracts as well as selling on eBay. Everyone seems to have good things to say about Ted. Most of the varieties are only offered in 1lb bags. It takes me forever to work through a pound of a single variety, as I usually only use around two pounds total in a year. That's partly due to the fact that I use whole hops, and there's a limit to the quantity of whole hops that can be used in a small batch without losing too much wort to the hops with my setup (I also prefer beers with a BU:GU ratio of 0.5 to 0.. I am assuming that Ted offers 1/2lb bags upon request.
Gee, I coulda told ya that!
He also has quite a few varieties in 1/2 lbs. if that makes things any easier for you. If you PM me your email addy, I can shoot you the 2014 order form so you can see what he has/had.