Probably not. I did register for my smaller friends shower at the Green Baby store in my town, and nobody bought anything from there. It's possible because they were all individual pieces, whereas the gift at my bigger shower was a set with a larger price tag so they did it together as a group. Plus my best friend and hostess was in on that gift as well so she knew I really wanted/needed it and got the girls together on it.
Some people don't feel comfortable buying something if they don't know anything about it. Even if you lay it out for them and basically say "this is what I want" they'd rather buy what they know or have experience with. Some people asked me what I wanted and out of the options I gave them 1 was usually CD related and none of those people gave CD related gifts; they gave bottles or bed sheets, or whatever else I had asked for they were more familiar with.