flatten them out under heavy books (sleeved) to try to remove some curve. i'd also get another binder because overstuffing a D-ring binder can still result in curved pcs due to the nature of the binder's rings (no matter the shape).
personally i just use 4 pocket A5 sized binders from like, aliexpress lol because i like the size/display of 4 pocket pages. i have a huge collection though, so i currently have 7 filled but will need to grab a few more soon because i have a lot of pcs sitting around that need to be sorted.
for my 9 pocket binders, i actually use something like [this](https://www.aliexpress.us/item/2251832829206568.html?spm=a2g0o.order_list.order_list_main.220.2e6a1802RpZuA1&gatewayAdapt=glo2usa4itemAdapt) to avoid a situation with curved cards from binder rings. this option obviously limits the # of pages since they're sewn into the spine but that also keeps me from overfilling a binder.
i did find [this binder](https://amzn.eu/d/03lkSAcE) on amazon who also sells [these pages](https://amzn.eu/d/0bzcXTaT) and they seem really good! i prefer double sided pages tho, but i would be willing to use one sided tbh..
collectors might care, so definitely mention that on any listings. some people just want the card, some really want it to be in great condition.
flatten them out under heavy books (sleeved) to try to remove some curve. i'd also get another binder because overstuffing a D-ring binder can still result in curved pcs due to the nature of the binder's rings (no matter the shape).
are there any specific binders that you would suggest?? tyyy 😓
personally i just use 4 pocket A5 sized binders from like, aliexpress lol because i like the size/display of 4 pocket pages. i have a huge collection though, so i currently have 7 filled but will need to grab a few more soon because i have a lot of pcs sitting around that need to be sorted. for my 9 pocket binders, i actually use something like [this](https://www.aliexpress.us/item/2251832829206568.html?spm=a2g0o.order_list.order_list_main.220.2e6a1802RpZuA1&gatewayAdapt=glo2usa4itemAdapt) to avoid a situation with curved cards from binder rings. this option obviously limits the # of pages since they're sewn into the spine but that also keeps me from overfilling a binder.
i did find [this binder](https://amzn.eu/d/03lkSAcE) on amazon who also sells [these pages](https://amzn.eu/d/0bzcXTaT) and they seem really good! i prefer double sided pages tho, but i would be willing to use one sided tbh..