I paid $66 for mine at Amazon in Feburary. I think they are like $80 there now. The power quality is great. I get only about 1% voltage fluctuations. As for noise, compared to most PSUs it is wonderful. It is not silent however, but the noise is a very constant low airflow noise. There are quieter PSUs like the SilenX, but I doubt they are nearly as reliable.
Brian