I just finished adding about 20 new rarer slot card doubles on my Delcampe store. All prices are discounted 30-40% off catalog prices as listed on Delcampe but I can do a little better if we deal direct. Let me know if any questions or if you're looking for anything specific. There's over a thousand rarer slot cards listed. The link below will show you JUST the rarer cards from the over 13,000 slot cards listed.

https://www.delcampe.net/en_GB/collectables/search?categories%5B%5D=20485&search_mode=all&excluded_terms=&is_searchable_in_descriptions=0&is_searchable_in_translations=0&term=%5BRSC%5D&seller_ids%5B%5D=554914

If you want to search for anything specific in the Delcampe store, just add your search criteria to the search box but keep the "[RSC]" if you just want to see the rarer cards.