Dupes for Estee Lauder eyeshadows in pale moon and ivory box?

They came in a holiday palette I got as a gift a few years ago, but I don't want to spend $20 each replacing them! Are there any Mac or inexpensive dupes for these shades? Please only answer if you have owned these shades personally! Thanks!|||Search this page: http://www.youtube.com/user/MichellePhan鈥?/a>