The Mercado Artesanal in the "Mariscal" of Quito is an excellent alternative if you dont have the time to go to Otavalo. It is opened all days of the year and offers the same products you find in Otavalo at the same prices. Two hints though: Watch your personal belongings inside the Mercado! Dont pay the first price that the sales person tells you. Take your time to see everything in the whole market, then, when you know what you want, make package deals. For example: You want pants for 10$ and a shirt for 8$. Offer 12$ for both, and finally pay 14$!