I picked up a pair of blem UB-5s for $399. For the price they are really good: good imaging, wide sweet spot, fairly fatigue free, great bass levels.
The only negative I noticed was the ported bass (I currently have sealed speakers). Not sure I could live with ported given that I prefer sealed. I was auditioning with another AC'er. He noticed they do have some accentuation in the upper octaves that can, at times come off just a tad abrasive. I agreed with him.
Also the build quality is so-so. The crossover rattles around in the bottom on both of my speakers. I emailed ELAC to ask if this is normal.
But, for the price, a really good value.