Yes, you certainly can. Framed and ready to hang works are preferred by collectors as it reduces work and effort for them.
We know that framing is expensive and you wouldn't want to frame all your works prior to sale. If you can source pictures and prices of frames, you can display the artwork as framed. Once it's sold, you can get it framed.
We understand that it might take a few additional days to have it framed. Just mention this extra time (keep 1-2 days as margin) in your artwork's description so the collectors' expectations are managed as well.
Glass breakage and damage due to that is not insured for art so, you'll just need to package it extra securely and be aware that breakages may occur.