I am a newbie . but what i find is buying is good for your seo on fiverr. when i have only 12 dollar in my fiverr account .I buy my friends gig so that his seo is going up . now he also buying my gig for his work . It is quiet helpful for fiverr business.
Admin Note: You appear to be talking about multiple purchases and purchases between sellers which means your suggestion would probably be considered a violation of the Terms of Service. When you buy gigs from each other it becomes a review exchange which is a definite violation. Given that, it cannot be considered a Tip for Sellers and will be moved to Conversations.