so I FINALLY figured it out!!!
if you HOLD DOWN SHIFT you can highlight over your text chat, or items that are linked in the text chat (by holding shift and the left key you will see a white highlight over the words)
ctrl + c is to copy
ctrl + v is to paste
I recommend typing in /say first ; link one item into chat
now with the item that you put in /say highlight over it with the shift and left keys
then copy that item/line with ctrl + c
next - link a second item in the chat and on that same line after the item type in a space, and then hit ctrl + v to paste the first item on the second line
it doesn't stop here....
next highlight those two items with shift + left key, then copy both those items with ctrl + v
then link a third item into chat with /say and then after the third item press ctrl + v to paste the other two items....
you can link up to 300 characters before it will start cutting items out, so you usually can link like 4-6 things in chat, this way your not taking up multiple lines in /zone when you try selling things
just make sure if you want to link the things in /zone after you link all 5 items, click /zone at the beginning of the line to switch from /say to /zone,
make sure you tell em evan wimbish told you!