I had a question for those of you who go treasure hunting at flea markets, garage sales, thrift shops, antique stores and such. How do you know what's valuable and what not, what's rare and what is common?
Like do you carry around books and rarity guides to check, or do you remember everything (probably hard to remember the value of every item) or do you know from experience, or maybe you just gamble and go with your intuition?