Binders: https://www.amazon.com/Avery-Durable-Binder-Slant-Binders/dp/B071DFG4G1
Pages: https://www.amazon.com/Portfolio-Dragon-Shield-18-Pocket-Collectors/dp/B079C3CM32/ref=mp_s_a_1_1?keywords=dragons+shield+pages&qid=1578018534&sr=8-1
Those pages are top tier, gold standard quality.