4e made a large change to the way that magic items were created in D&D. And it was about damn time. Gone are the days of having to search high and low for someone to buy that extra +1 blah off you so you can get what you really wanted. Now you can distill it down to its component essence and build the damn item yourself. Finally an entire swath of useless bookkeeping was cut out of the game. Huzzah!