The Home Depot is having a 25% off online sale of their Closetmaid Impressions closet system line in white Laminate only. The white Laminate is usually the most expensive color option. I installed a cherry closet system on theirs 4 years ago and it's been great.
I recommend ordering the various parts of the system individually instead of their package systems. This will save your anywhere from $50-$300. I ordered 2 of the standard systems with 6 drawers for $460. If any items show as out of stock, just wait a day and it'll most likely be available. I had to order the closet system on day 1 and the drawers on day 2.