Oh my dear, I'm not sure I can talk you out of these The only drawback for me would be the price; I was lucky and got mine at half price. However, I think wedge sneakers are definitely becoming mainstream and we're seeing more knock-offs at lower price points, so keep your eyes out for those. Also, that means I'm sure we'll be seeing them around for one or two more seasons, at least. Heeled sneakers in some incarnation have always been around.
These are not 3"; more like 2.5". They feel a bit lower than my Doc Marcies. I have bad knees (from two knee surgeries) and have been purging all my heels over 2.5" because they hurt too much for extended wear (goodbye Report Marks booties!). Not these! I wore these all night to dinner and karaoke (including dancing), and then the other night to dinner (involved public transportation and walking around the Mission). And then this morning to drop the kids off to school
Of course, my flat boots are always going to be more comfortable to me than any type of heel, but these shoes have pleasantly surprised me with their comfort level
Hope that helps!
ETA: Nordstrom has them at 2.5", which jibes more with my practical wearing experience
http://shop.nordstrom.com/s/as.....sultback=0