That's true. I personally have been playing with the idea to have customized tips for them. It is really tempting! But you know, if you could go for a better deal, then you should.
Listening to my ER4 while reading this thread probably makes that idea even more tempting.
Oh yes, of course! Personally, I wouldn't mind picking up a used pair of ER4, which I did. Because of the superb build quality, a used pair will still look almost the same as a new one in most cases, like ClieOS said in his review. I got my used ER4 P/S from the forum for $135 shipped in Canada for a total of $150. It's about one year old. Still looks mint to me.