Bare drive, 64 MB cache, 6.0Gb/s SATA connection. Refurbished with a 90 day warranty. Promo code NOT required. Pricing good through 5/30.
Newegg rating on this is 5/5 with 4 reviews.
Note that this is a slightly different model than the one posted on here a week ago. That one was the WD20EADS, which has 32MB (vs. 64 MB) cache and 3.0Gb/s (vs. 6.0Gb/s) SATA connection.