I don't think $2K for Ser.1s, even refurbed & delivered, is particularly good. I don't even remember seeing any /2s going for that much. Surrounds only cost $85, and take a couple hours to DIY. Shipping is expensive, with 107s generally selling for $900-$1200 (less without the KUBE), I think around $1500 would be top dollar. I don't even think nice /2s would bring as much as $2k... even delivered.
Out of curiosity, does anyone have any idea how many of the series 1s were made, compared to the /2s? I only ask, because it seems almost all the 107s I see for sale are series 1s. I wouldn't have thought there were that many less /2s, but judging by ebay, I guess they are not as common.