Seed from luethyi and perezdelarosae

Any advice on getting hold of good seed from M. luethyi an perezdelarosae?
Thanks in advance

Several sellers in the EU sell these seeds. I wouldn't use any eBay seller, but worth checking on Gerardo who has perezdelarosae and bombyrosa in their current list, but not luetyi. Worth keeping watch....

You may also want to have a look at the seed list of the German Mammillaria Society. No luethyi seeds, but perezdelarosae and perez andersoniana were on this year's list (and a lot of other mamms!). Click 'Samenfonds' on their homepage mammillaria.eu and then click on 'Samenliste (Stand 15/01/2021)' for the most recent list to get an impression.

Wolter ten Hoeve.

Joel Lode has some Peresdelarosae v andersoniana seed last time I looked a week ago. Succeed is closed for another month or so but often has Perez.

Aymeric De Barmon is showing seed of luethyi on his list, doesnt mean they are still in stock but worth a try.