Where the Westin Heavenly Mattress Pad falls far short of other premium pads is the amount of padding. This pad has 8 ounces of fill per square yard at best, whereas other premium pads have 16 to 20 ounces of fill per square yard. The weight of the polyester plush fill per square yard has a big impact on how "luxurious" the bed feels when you slip between the sheets. Also, the lighter the fill the easier it is to compress the pad and the sooner the pad will begin to feel as thin as a pair of sheets.
As an example of the alternatives in this price range, Stearns & Foster makes a 600 thread count, Egyptian cotton, 16 ounce fill pad for a few dollars less, as well as offering a 1000 thread count, 18 ounce fill weight version (both available from BB&B). Considering options like these, the Westin Heavenly Mattress Pad would be more appropriately priced at $65 - $75, and even then would be on the high side for such a light pad.