Hi Moshe, welcome to eBay! The actual selling is alright but these forums can get a bit nasty at times, particularly over on the community spirit board - so I suggest sticking to the buying/selling boards for now!

I understand what you're trying to ask. Don't quote me on this, but I think you have to use something called Markdown Manager. I don't think there's a time limit. Try going into Account > Marketing Tools > Markdown Manager.

Happy selling! Jess 🙂