The 15$ per paper is expensive but the membership gives you access to all papers and is relatively inexpensive. If you need to access research material frequent

The 15$ per paper is expensive but the membership gives you access to all papers and is relatively inexpensive. If you need to access research material frequently, you are probably better off having a membership and an ieee membership as well. You employer may pay it for you or you may get tax deductions for these fees as well.