Sports memorabilia is something we never really outgrow. As with comic books and video games, collecting sports memorabilia remains an acceptable passion for any grown man or woman well into adulthood. And no sports nut embraces vintage swag quite like the NBA fan.

But if you’re on a budget—and let’s face it, a lot of us are—it’s important to prioritize which vintage collectibles are truly essential. To help you determine what you absolutely need to get your hands on, we’ve narrowed down the list of must-haves to seven key choices, laid out in a trusty guide.

Before you overpay for that brawl-era Artest jersey, be sure to check out the guide on eBay, which you can find here. It’ll save you a big headache and a serious amount of moolah.