How do I find a seller so I can look at there items ? I know the sellers user name

[otay2]

How do I find a seller

[gosimus]

@otay2 

< How do I find a seller >    

Go to Advanced Search https://www.ebay.com/sch/ebayadvsearch and look in the sidebar on the left for the By Seller link.    

[woodland_gnome]

You can do an Advanced Search limited to his/her items, but I find it easier to just bring up anyone's list of active listings (e.g. click the "View listings" link next to my feedback score on this post), edit the URL in the address bar of my browser to substitute the target seller's username for yours (or whoever's) and hit enter.