I can find good things from time to time, as most Goodwill.
However, I was there at one $1 Thursday, when it's supposed to be $1 for all items of specific color tag at noon time, and found that the workers were busy gathering a lot of clothes of that color tag and put them onto the racks behind the check-out counter. I assume that they don't want to sell them to you at Thursday at $1 but rather like you to pay half price at Saturday.
I don't know whether this is normal for all Goodwill. JYI