i see a lot of people claiming that the people with the most money will be able to make the best decks, this is not always true. back when i used to play MTG and YGO regularly i used to sweet talk the guys buying boxes of boosters into giving me the 'useless' commons they got, and would often build decks, that although they weren't going to win lots, could still give even meta-decks a good match. my best successes at this strategy where in yugioh, when i built a deck of normal monsters, and when cloudians where released i built a deck from them. (which i still use if any of my friends are playing each-other.) overall both those decks probably cost me about £5 allowing for trading for the one or two rarer cards (although people would often donate rarer cards they had multiple copies of to the cause of my decks that where particularly powerful)
so anyone who says that spending a lot of money on a deck means auto win, it doesn't, with better tactics, a half decent deck and a little bit of luck you can beat a player with a much better deck.
anyway, this game has tickled my fancy!