How much is it worth (1x 808 2013, 1x 404 2013, 1x 404 2011)

Hello,

I need to bid on a set of three Zipp wheels:
1x rear tubular 808 2013 (Shimano 11 spd) with ~600 miles
1x front tubular 404 2013 with ~600 miles
1x front tubular 404 2011 with unknown miles
2x installed Tufo S33Pro with low mileage

How much should I offer?

Thanks.