If the content is as described in the title, please purchase as is ^_^ Shipping is included! Basically, it's better not to reuse extensions once they've been applied, but you can purchase if you really want to. *Seal extensions are not included.* I'll tell you how to attach them so they absolutely won't come off after purchase, so you can rest assured (^-^) For those ordering in quantities other than multiples of 20, we will round up for the sake of streamlining comment processing. For example: 5 pieces → Price for 20 pieces 25 pieces → Price for 40 pieces Orders are in units of 20 pieces. Please comment if you want to change the number of sheets. ◆ 1 sheet (20 pieces) 580 yen ◆ 4 sheets (80 pieces) 1100 yen ◆ 5 sheets (100 pieces) 1500 yen ◆ 8 sheets (160 pieces) 2000 yen