I do it from time to time. I sell on Bonanzle and on eBay. While I rarely make any sales on Bonanzle, the few times that I have, I pulled my eBay listing.
Also, I had a bag that was listed as NWT. Even though there was still factory protective coverings on the hardware, I realized there was no tag. There were bids on the item, so I couldn't edit it....so I pulled it.