This lot has been on ebay unsold for a while (relisted recently), no relation to the seller:

Lot of 4 Lenses Pentax , Tokina, Vivitar , Sigma #16E374 | eBay

$115 for all four shipped in the US might be a good deal, depending on the actual condition of the lenses (glass condition, haze, etc.) The Sigma 70-210mm is a constant f/2.8 (with a massive 82mm front filter size, and with a filter fitted to it, front glass might be in good condition). This Sigma AF lens predates the EX and EX DG lineup by a few years, so we're talking early '90s era. Who knows if AF works on modern bodies. It's missing the tripod collar and hood, and the body has been through a lot as it's missing a lot of the text, in fact the seller erroneously calls the lens an "AF700" where the text originally read "AF ZOOM APO" but the bottom of the Z wore off, the M wore off, and the APO wore off! So who knows what you'd get, but I thought it was worth mentioning here.