I have over 11 years of experience with exports out of China and I have manufactured jeans before. I will need the specs, logo design. What kind of jeans you are looking for, mens, womens? I have only done large quantities like 10,000 pieces and not ventured into smaller amount like 500. I can to speak to my factory guy and convince him to produce 500 pieces and get you the best price possible. usually for large quantities the price for jeans is between $5-8. For smaller quantities, I will have to check and get back to you.