sell price of the files

Hi Moderators,

I just realized the 30 coins taken when I download a file is not same as the "Gold Coin" setting when I upload a file. Could you change the sell price of all my posts to be free? Thank you!

[Thanks to karriboo for the tip! I couldnt reply message under group DIY.0, Im sorry!]
[Update: Heres the list]
//bbs.pindiy.com/thread-293284-1-1.html
//bbs.pindiy.com/thread-293290-1-1.html
//bbs.pindiy.com/thread-293320-1-1.html
//bbs.pindiy.com/thread-293321-1-1.html
//bbs.pindiy.com/thread-293323-1-1.html
//bbs.pindiy.com/thread-293325-1-1.html
//bbs.pindiy.com/thread-293326-1-1.html
//bbs.pindiy.com/thread-293328-1-1.html
//bbs.pindiy.com/thread-293329-1-1.html
//bbs.pindiy.com/thread-293330-1-1.html
//bbs.pindiy.com/thread-293381-1-1.html