This is a quote from what Phil posted on the Lisa-thread you pointed us to.
The price is refering to the LISA III if I am not mistaken. So that will be out of reach for me for a portable one.
"I believe the LISA III is the best Small portable amp available from any one. An upcoming Commercial Amp based upon the LISA III will soon be available for those that want the absoluter best in portable amps that are somewhat small however expect to pay about $700 USD for the commercial version and $500 USD for the power supply. the DIY versions are then a bargain and i can not say if i will offer DIY boards for ever like tangent dose. Im thinking a lot of 100-200 Blank Boards or kits, then repackage the amp for commercial builds development."
Edit: Hmmmm i think I draw conclusions to fast. Price of LISA II is not available yet....sorry once again