I think Warren Buffett would very much disagree with you on this. Warren's philosophy has been to find obtain things that are undervalued and to avoid things that are overvalued.
Warren Buffett doesn't buy junk because it is cheap. He buys quality that can be turned into higher quality with proper management.
If Warren Buffett owned the Cavs, he would likely determine that Kevin Love is undervalued, perhaps the most undervalued player in the league. Certainly, Love has a high value to Minnesota in terms of trade value, but he is undervalued in the following sense: he is a very productive asset that hasn't been utilized properly (i.e., Minnesota hasn't been able to surround him with the proper talent to become a winning organization). As a member of the Cavs, Love would add value to the organization far in excess of his trade "cost":
1. Synergy with Lebron and Kyrie = increased wins, playoff appearances, possible (probable) championship(s)
2. Presence of superstar = increased marketing/merchandising potential, value of franchise increases (remember, the NBA is still a business)
3. Winning organization = increased business activity, chance to profit in other downtown business ventures (i.e., casino)
4. Intangibles - bring a championship to Cleveland for the first time in fifty years, become a local hero
Now, what is the proper price to pay for Love? Well, if the goal is to create a Big Three, then obviously you cannot trade the first two members of that potential triumvirate (Kyrie and LeBron); Minnesota would not expect either of those two players in any trade. And you cannot trade away the pieces that have been retained or brought in to complement the potential Big Three (Varejao, Miller, Jones, Ray Allen?); Minnesota wouldn't want any of those players anyway. Every other asset owned by the Cavs should be fair game. Of course, you try to keep the price as low as possible, but once you realize how valuable Love is to the Cavs, you see that it would be very difficult to "overpay" for him, especially when the assets you have to offer have little or no proven value.