"I Received this thermos for free" sounds correctly typical to me. "That thermos was for free" Seems undesirable: I'd just say "That thermos was free." 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 I don't think you can find any distinction in which means, although "free of costs" is much less common than "free of https://sexeslive.com/