Yup! It works like a champ. Here's the finished snippet that does the job:
{imageurl=extractregex({site: html; page=https://www.bidsquare.com/*; select=ifneeded; selector=table :nth-child(1) .detail_s_img},"\d+/\d+.jpeg"); trim=yes}
{image: https://s1.img.bidsquare.com/item/m/{=imageurl}; height=268; width=181; trim=left}
It sure beats writing out the forms long hand!
Thanks so much for the help!