The optic on the first rifle on your chart is a vortex gen 3 worth a little over $2k. The gen 2’s normally fetch $1200 ish. The MCS stock is around $1350 ish and the ACC normally brings close to $900. The barreled actions (action,barrel, and trigger) are normally $2k ish depending on components and round count. Just carefully check over past ads on the for sale section here and price accordingly.