20 Yu-Packet Post Mini sheets. I purchased these from the post office before, but I'm selling them because I haven't had a chance to use them. I can also list them in quantities from 1 to 30 sheets. How about it for those who don't have time to go to the post office? For reference: 1-3 sheets: ¥300 4 sheets: ¥330 5 sheets: ¥350 6 sheets: ¥370 7 sheets: ¥390 8 sheets: ¥420 9 sheets: ¥440 10 sheets: ¥460 20 sheets: ¥680 30 sheets: ¥900