Walmart for shirts and shorts. I shopped the sales at Sports Authority for my tights. I probably have at most $50 into a cold days clothes, $25 in the warm summer. I hand wash mine every night and hang in front of a fan to dry. Not that they need to be hand washed, it just saves energy and water instead of running the washer and dryer.
I bought everything tight. I've lost just about enough weight to go a any buy the next size down because everything is starting to get lose.