Error Message showing up even though shortcode appears correct

Hi!
I’m getting this error message:

You did not specify a price in the shortcode

The shortcode is correct as far as I can see:

[gallery ids="801,802,803,804,805,806,807,808,809,810,811,812,813,814,815,816"]
[gallery amount="10.00" button="Buy"]

http://www.girlsrocksb.org/buy-photos/

Thanks!

http://ww.wp.xz.cn/extend/plugins/wp-isell-photo/