offer quantity price. The more you order the better price you can enjoy. If you want to know the details and just contact us.?4. Is OEM acceptable?Yes, OEMS is acceptable. We can also customize items as customer's request.?5. Do you offer free sample?Yes, but i am afraid that you need to pay for the shipping cost and only parts of the items are free.?6. What's your shipping way??By Sea (it's cheap and good for big order)By Air (it's very fast and good for small order)By Express, free choice