After having several nightmare experiences returning IEMs to various online vendors after disappointing experiences with the monitors, I am no longer interested in patronizing anything other than brick-and-mortar stores for IEMs. Brands such as Sony, Monster, Ultimate Ears, Q-Jays, Sennheiser, Shure, JVC, Audio Technica, Klipsch, etc are easily found in your local Best Buy, Apple, Microsoft, and audio specialty shops.
Other brands like Dunu, Phiaton, 1964Ears, etc are really boutique brands that can only be accessed through high-risk purchases online with vendors who may/may not enforce restocking fees, who may/may not properly receive and credit the returned merchandise, etc.
I live in a major US metropolitan area and at least 50% of the IEMs on this list are completely unavailable to me for purchase unless I am willing to purchase online. This is a complete failure of those manufacturers to get their products into stores against the Skullcandy/Beats juggernaut.
I wish this IEM list would make mention of which headsets are available to purchase in stores and which are online-only models.