New Folding TRIPLE TANDEM Bike (sells for $3850) - - $1925 (South Orange, NJ)
Bike Friday "Family Triple Traveler" with one mile on it.
http://newjersey.craigslist.org/bik/2996459249.html

(Not mine, but I remember how hard I looked for something like this at a reasonable price, back when my kids were smaller.)