KHS Flite 500 Bike for sale

I recently bought this bike (bought in August) and it has 100 miles on it. I bought it thinking i wouldnt do many tri's but no im hooked so i want a tri specific bike for next season. This bike has ultegra rear derailers, tiagra front derailers, 105 flite deck, thompson seatpost, selle grand prix seat, SUN MZ13 wheelset, new continental gatorskin tires, truvativ crank, SPD pedals, clipon century aerobars with cateye computer. Two specialized light waterbottle holders also. Good bike for someone who will just do tri's as a once and a while thing. The frame is a medium or appoximatly 55.6cm. Would like to get $600.
I have lots of pictures!