Your can purchase beads and seeds from your local licensed acupuncturist.
Golden Needle Online is a great place to buy the magnetic beads and seeds. We especially like the Helio E-5 magnetic bead
Earseeds.com sells all sorts of packages for all sorts of ailments. You can also buy just plain earseeds: 600 for 18.99.
Many sites on Ebay and Amazon sell ear magnets and vaccaria seeds.
Make sure you buy small ones – 2mm. And that the seller ships from the same country you live in.