I'm not sure if ERO has them, but you can try. They're right,
the departmental stores should have stockings of better quality,
which will be more fit (hehe pun) for a gift!
I was walking around that shopping centre at chinatown that's
nearest to outram mrt, on the ground floor there's a shop which
specially deals in socks and stuff, but didn't have a chance to
look closer either...
hehehe