Depends a lot on where you are doing your shopping. Some areas of Madird and Barcelona would make the stores on Rodeo Drive seem cheap. Out away from the metro areas will not be that unreasonable. The further away from the central shopping district such as the Gran Via in Madrid, the more the prices come down. Stores like El Corte Ingles are comparable to Macy's and Gimbles. Small mom and pop operations will always give better deals on products.

A side note about El Corte Ingles: When my friend and I went a couple of years ago we took our wives who had never been to Spain. Almost on the first day one of the two wives notices the El Corte Ingles chain and asked what it was. Almost as if it had been rehearsed, we said it was a chain of thrift stores like GoodWill or Salvation Army. That ended the problem until almost the last day before going home. While waiting for a bus near the entrance of one of the stores it was raining and one of the women decided to go in to get out of the rain. I suppose anyone can imagine what hit the fan. That proved to be a very expensive day. Our little ploy headed off problems for almost two weeks.