There are wonderful things available at many thrift shops. I shop at GW occasionally, but it is more distant and their prices are higher than at other quality places. I have found great buys, some new with tags still on, at our hospital auxiliary and Hospice thrift shops, as well as at a church-related shop where I have seen migrant workers able to purchase full grocery bags of clothes for children and adults for $2 a bag.
I don't buy just clothes. I have a growing wardrobe of watches I have purchased for $2 to $4. Add a battery from Walmart and they work just great.
When I buy, I generally give an additional $5 or so because those charities do so much good in the community. That is where I donate clothing, as well.
I have had clerks at these places admire something I have found to buy, but have never encountered a comment I would consider inappropriate.