Ultra-Pro 16 slot American mini pages

These?

https://www.amazon.com/Ultra-Pro-Platnium-Imperial-sizedCards/dp/B01CTY7LT2/

Thanks for the info and this post!!

Quick question - did you put all your marketplace cards in the pocket pages? And that's how you ended up using 20 pages?

Asking because I just found this Amazon listing for a 25 pack of Ultra Pro platinum sheets, and I want to make sure that's enough sheets to hold the entire marketplace

I use this 3 ring binder: https://smile.amazon.com/dp/B079NN9ND1/ref=cm_sw_r_cp_apa_fabc_26FHAQBBZFNJ57735TR9?_encoding=UTF8&psc=1

I use the euro mini card sleeves on my items and have them all stored in these pages without a problem: https://smile.amazon.com/dp/B01CTY7LT2/ref=cm_sw_r_cp_apa_fabc_YN0CPWTDWH2HK11RXWP8?_encoding=UTF8&psc=1

I like to use that type of 3 ring binder because I use the expanding files for character sheets, rule books, scenario books, sticker sheets etc.