Professional Designer 3D (PD3D), is an ideal starter package for the homeowner, novice or intermediate designer.  Reviewed and recommend  by major CAD publications as

one of the most versatile 3D Model collections. Professional Designer 3D with 7 Libraries and 725 models represents and incredible value for the budget minded consumer.

Available: Feet/Inches and Metric Scales, DCD, DWG and DXF formats.   Download complete package with 725 quality models, now for only $69.00,  individual libraries for as low as $19.00.