Thank you very much for viewing our product page. This is a set of 10 Miki Imai CDs. Of the 10 CDs, 8 are demo CDs, samples, and not-for-sale items that were only available to those involved before the release. The audio is fine, so you can enjoy them normally. Collectors and Miki Imai fans, how about it! Shipping: We will ship within 1-2 days after payment and confirmation of the shipping address. No returns. No claims, no returns.