We purchased the 3 piece set for a rental property.  For that purpose they are fine. 
I could not find anywhere in the product description where it said that the cabriole legs were made 
of "hollow plastic or fiber glass "  If you read the features it says faux marble top in product detail it says 
Top Material Marble. Misleading, but they are pretty and will be fine.  If you are expecting plastic parts...you won't be disappointed.

Features
    Includes: 1 Coffee table and 2 end tables
    Finish: Dark Oak
    Frame construction: Wood
    Faux marble table top
    Decorative wooden carvings
    Cabriole legs
  
Product Details
    Product Type: Coffee table and two end tables
    Style: Traditional
    Top Material: Marble
    Base Material: Solid Wood