So im new into road bikes and i have a scott speedster s60 but my friend has this Aerocat R509 full carbon that i have never heard of and i cant find any bikes like this for sale. He wants $800. I see a bunch of great reviews but i cant seem to find out what the dang thing is really worth. Like if i didn't like it and i wanted to sell it what would it be worth asumming it was in near mint shape? please help