If you are in town, do pay them a visit - you will see some beautiful clothes, maybe a celebrity or two, and if you buy something you can look gorgeous while helping support a great cause!
For the love of thrift rating (from 1 to 10):
Niceness of staff: 10
Bargain factor (ie pricing): 7 (if you're looking for designer wear)
Thrift turnover: 8
Use your head: shop for a cause thrift store is on 262 Mott Street