The new "Search by Seller" produces a very long link to null out all the other options. But it seems to work...
https://www.ebay.com/sch/i.html?_sofindtype=0&_byseller=1&_nkw=&_in_kw=1&_ex_kw=&_sacat=0&_udlo=&_udhi=&_ftrt=901&_ftrv=1&_sabdlo=&_sabdhi=&_samilow=&_samihi=&_sadis=15&_stpos=95678&_sargn=-1%26saslc%3D1&_salic=1&_fss=1&_fsradio=%26LH_SpecificSeller%3D1&_saslop=1&_sasl=chipsbottles&_sop=1&_dmd=1&_ipg=50&_fosrp=1
