I wasted almost 5 hours in line at Best Buy Thursday, hoping to get one of the 50" Sharp 4k's they were offering for $180. I was 23rd in line. They handed out MAYBE a dozen tickets for those. Fortunately, I was able to instead get a 49" 4k from Amazon's flash deal for $167 (free shipping).
It's an Avera brand (never heard of those), but they show to have mostly good reviews.