This season has shown fans to expect the unexpected. Week 6 saw the undefeated Eagles lose to the undermanned Jets and the Browns defeat the 49ers. In week 7, the Patriots shocked the Bills and the Ravens blew the doors off of the 5-1 Detroit Lions. As always, savvy collectors can take advantage of the unexpected. Below are some key cards for the stars of the NFL's Week 7.

Travis Kelce 2013 Topps Chrome Refractor

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Travis Kelce has been in the news quite a bit lately, but it has had little to do with his play on the field. Dating the most famous person in the world and having her show up to all your games will do that for you. Despite all the talk, Kelce is playing just as well as he ever has when it comes to football.

The massive exposure brought by seeing Taylor Swift has seen Kelce's jersey sales rise. Could the same thing happen with his cards? If he keeps having lines like he did against the Chargers (12 catches for 179 yards and a touchdown), that would help too. Kelce's 2013 Topps Chrome Refractor is selling for $400 to $500.

Chase Young 2020 Panini Absolute Kaboom 

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Coming out of Ohio State in 2020, Chase Young was supposed to be a star right away. And he was, winning Defensive Rookie of the Year and making the Pro Bowl in his first season. Young's major problem has been staying healthy as he's missed most of the last two seasons. The injuries have been so bad that the Redskins declined Young's fifth-year option.

Young, who could become a free agent after the season, is whetting the appetite of several teams. During this weekend's game against the Giants, Young recorded 2 sacks and another tackle for loss. His Kaboom insert is one of his most popular cards and has been selling for around $200 in PSA 9 condition.

AJ Brown 2020 Panini Prizm Silver 

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It feels like AJ Brown could end up on this list every week of the season. Teaming with Jalen Hurts, the wideout has been dominant for the Eagles. Through 7 games, Brown has caught 52 passes (4th in the league) for 809 yards (2nd in the league). And he's done this damage on an incredibly consistent basis.

In week 7 Brown was shining again in a prime-time game against the Miami Dolphins, catching 10 balls for 137 yards and a touchdown. Brown has clearly become one of the top 5 wide receivers in the game. His Panini Prizm rookie can be had for around $50 in PSA 10 condition.

Myles Garrett 2017 Panini Select Field Level

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The Browns have had a strange season. Meant-to-be franchise quarterback Deshaun Watson has been in and out of the lineup and star running back Nick Chubb is out for the year. Still, the Browns have been impressive thanks to their suffocating defense.

That defense is led by pass rusher Myles Garrett. Garrett recorded 9 tackles and 2 sacks in the team's win against the Indianapolis Colts on Sunday. Garrett was the first pick of the 2017 Draft and his Panini Select Field Level rookie sells for under $100 in top condition.

Kirk Cousins 2012 Topps Chrome Refractor

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The now-Washington Commanders drafted Kirk Cousins in the 4th round of the 2012 Draft. In that same draft, they took quarterback Robert Griffin III 2nd overall. At the time, very few people could imagine that Cousins would have a much better career.

Cousins may not be long for Minnesota, but he is having an excellent season so far. During week 7's big win against the 49ers, the quarterback threw for 378 yards with 2 touchdowns. Cousin's 2012 Topps Chrome Refractor can sell for a variety of prices based on condition and color.

*Any perceived investment advice is that of the freelance blogger and does not represent advice on behalf of GoCollect.