Actually, I just ordered Cascade Hop Extract (2 oz / each container) for $15/each from HopTech. That's about 60ml, which equates to about 600 IBU worth of Cascade power, if for the full boil. However, it being Cascade, I will use it for massive late hop additions. First beer on new brewstand will be the pilot for a Super Cascade late hopper.
They also have Fuggle, Saaz, Hersbrucker, EKG, Willamette and a British Blend. The also have that IsoHop stuff where it is just for bittering (already isomerized).
P.S. That is about $7 cheaper for the Extract than Farmhouse has it for.