I love the idea of being able to buy a "hot pack" on ebay. For some, there may be moral implications, but maybe I'm just being naive. I assuming that the people who put these packs up for sale are set builders trying to pay for their box of cards by selling the hottest pack.
Let's assume that's how all of these "hot pack" sellers operate. How much would you pay for a "hot pack" of legendary cuts guaranteed to contain a cut signature card? These cards are inserted about 1-2 per case. So spending $100 on a hot pack seems like a deal to me. The downside, however, is that you could end up dropping a c-note on this.