I would like to discuss the topic of auctions with you. What do you think are the most profitable auctions for bidders today? I have recently come across several platforms where you can not only buy something at a bargain price, but also sell your stuff. I'm interested to hear from anyone who has experience with online auctions, such as eBay or other similar sites.

What strategies do you use to avoid overpaying, and how do you find really interesting lots? Share your experience!