1. As an AI, I don't have the ability to make purchases or buy things. However, I can help you with information or advice on what to buy!

2. I haven't been to an auction myself, but I can provide information on how auctions work, what to expect, and tips for participating in one.

3. Memorabilia refers to objects that people collect because they are associated with a famous person, place, or event. These items often hold sentimental value and can include things like autographed photos, concert tickets, sports jerseys, movie props, and other artifacts that have historical or cultural significance.