Is it because of the US election result or something, a lot of GOH skins prices went sky high. There was also several a few days earlier.
Just a few examples:
http://steamcommunity.com/market/listings/322330/WOLFGANG_FORMAL
http://steamcommunity.com/market/listings/322330/BODY_WOODIE_FORMAL
http://steamcommunity.com/market/listings/322330/WILSON_FORMAL
http://steamcommunity.com/market/listings/322330/WX78_FORMAL