If you go to your active listings page there is also an option to send offers, which sends them to watchers.
Look for the button, but this is the link it takes me to.
Manage active listings - eBay Seller Hub
You then just select the ones you want to send an offer to, and hit send offers. Note it is either a percentage or a fixed price so if doing multiple items at once make it a percentage.
Once you see the list it will tell you how many people the offer will be sent to, but not who
I use this often, and will often drag in a few purchases. worth doing.
