SRL for [resell]: `` On occasion , he paid a high price , '' Mr. Wachter concedes , but he says those who bid less and dropped out were dealers who would then have marked up the paintings to [resell] them at a profit to collectors .
ARG-0: dealers | R-ARG-0: who | ARG-1: them | ARG-M-MNR: at a profit | ARG-2: to collectors