If you are on a limited budget, free moving boxes are fine. BUT, keep in mind that you are putting your belongings that you paid good money for in USED boxes that may have contained any number of dirty or unhealthy things or may have been stored in area where bugs or rodents may have been present. Yuck! Used boxes may not be as strong as you might need because they were designed to contain different products, not your belongings! Big box stores often have small supplies of boxes and will not have specialty boxes such as mirror or wardrobe boxes. One broken TV can cost more than buying quality new moving boxes for an entire home. Having them delivered to your door for free saves you the additional time, gas and frustration. If you depend on public transportation or live in an apartment building, you will likely agree! Buy quality to avoid waste, damage and disappointment. Moving is stressful enough!