I want to start out casually, but I would be willing to pay more money if I were to go to competition. I knew it was going to be legacy, as I studied all of the formats before-hand and my friends that I wanted to play with really don't care.
Anyways, if you check back with the deck, I did get rid of that $20 Sphinx and the Revelation, as well as some of those $3 land cards and replaced them with something that was just as useful, but in a different way. I got rid of the Glacial Fortresses and added in a Sejiri's Refuge and a Soaring Seacliff. That's about it, I believe.