The standard eBay 5% off (eligible items - happy hunting) code is here again for February. Code appeared automatically on an bunch of items over $15 for me, but not everything.
Note: the T&Cs link isn't live just yet - it's linked to from listings, however meaning it'll go live soon. Given the Dec/Jan codes have the same T&Cs, it's highly likely Feb is the same.
ensuing months:
PLUSMAR5
PLUSAPR5
PLUSJUN5
etcetera etcetera