三支笔 = RMB 25 - RMB 3.90 = RMB 21.10

http://item.taobao.com/item.htm?spm=2013.1.w4018-2760588424.14.dwMWg5&scm=1007.172.0.0&id=35088393562&pvid=e600ac40-d8ee-4d3e-8efb-bf2c43824acc&jlogid=p21174718252ab 加这个
RMB 21.1 -  RMB 2.80 = RMB 18.3

http://item.taobao.com/item.htm?spm=a1z10.5.w4002-2760588435.49.P0KMMz&id=36881083883 加这个
RMB 18.3 - RMB 4 = RMB 14.3

http://item.taobao.com/item.htm?spm=a1z10.5.w4002-2760588435.35.yXoOoX&id=35475991206 加这个
RMB 14.3 - RMB 4 = RMB 10.3

http://item.taobao.com/item.htm?spm=a1z10.5.w4002-2760588435.53.yXoOoX&id=35319397249 加这个
RMB 10.3 - RMB 5.50 = RMB 4.80

http://item.taobao.com/item.htm?spm=a1z10.3.w4002-2760582558.88.2TmJ0V&id=19316706961 加这个
RMB 4.80 - RMB 2.80 = RMB 2.00 波点

http://item.taobao.com/item.htm?spm=2013.1.w4018-2760588424.4.hkHQKK&scm=1007.168.0.0&id=36174691527&pvid=cad905a9-1ab8-4440-b70b-e42c04a1acb9&jlogid=p2118041571ade 加这个
RMB 2.00 - RMB 1.20 = RMB 0.80 白色多件混发

http://item.taobao.com/item.htm?spm=a1z10.5.w4002-2760588435.16.7kH8ix&id=36850211946v加这个
RMB 0.80 - RMB 1.00 = - RMB 0.20

我给你 RMB 26