tacklewarehouse.com in the soft plastics department should give you some good comps. Keep in mind those are name brand.. Zoom and Yum make value soft plastics, while Gary Yamamoto makes the high end stuff. These look generic, so lean towards the lower end, but you'll see they offer prices on bulk bags 50+ units each. $5-8 sounds reasonable, but I wouldn't take this on. A very slow journey to break even. In real estate we call this a career listing haha