[Lyrica]

+10k members, focused on a show. Growing rapidly, +200 new members per day, new season just came out, so even more hype.

How do I monetize this the best? I'm not sure if I can contact the production company and work something out with them.

[007]

Probably just sell the right to advertise. What show is it? Maybe there is a specific niche connected to it somehow.

[Bullup]

Start a webshop and sell merch related to the show.

Shopify.com

Create your own merch or re-sell merch (either through dropshipping or buy stock and resell that)
About creating merch, you can easily print mugs for cheap, hoodies, or tshirts, just buy blanks and print on those. The hardware isn't that expensive, you can also get it printed by other companies and shipped to you or even dropship that way.

[diablospartan]

Well if you dont ask you will never know .Make a question to the show and ask them .

[Lyrica]

Would I be able to even profit after start-up costs with around 13k members?

[gam10]

+10k members, focused on a show. Growing rapidly, +200 new members per day, new season just came out, so even more hype.

How do I monetize this the best? I'm not sure if I can contact the production company and work something out with them.

You can Google official merch with affiliate program related to your group, become an affiliate and sell.