Printed on Kakugo 8 envelopes (119 x 197mm). Since it is printed by a printing company, the design cannot be changed. Available in increments of 5. (After the first 5, it's 5 sheets for 380 yen.) 10 sheets → 960 yen 15 sheets → 1340 yen 20 sheets → 1720 yen 25 sheets → 2100 yen 30 sheets → 2480 yen