Why don't you call Nashbar and tell them your problem first. They will be glad to give you a refund or exchange, I am sure. I would do this before complaining too much here. Nashbar didn't screw you, they gave you detailed info about the short.

I would understand your displeasure if they had misrepresented the shorts. But I wouldn't call this misrepresentation or a switcheroo, by any means. The Nashbar site lists these under the name Louis Garneau "Ergotex MMC Short" and says it has the "Ergo-MMC" chamois. The LG site lists just simply "Ergotex Shorts" with an "Ergo-G Improved" chamois. Clearly different. Furthermore, Nashbar says they are an exclusive product, which means it's obviously not the same as any other short offered by LG. I don't know about you, but when I see "exclusive product" I would make a point to do a tad of research and figure out what makes it different and exclusive.