Today and Saturday only
Today Best Buy started an iMac sale. It's good through tomorrow, and all four configs they're selling are at the lowest prices we've seen. Best Buy Apple iMac Sale
For example, the base model Apple iMac 21.5-inch MD093LL/A Core i5 All-in-one with 8GB RAM and 1TB HDD is down to $1,174.99 - a full $50 off the next best available price and the lowest we've seen.