Fresh seeds available, several different varieties, only available for the next 5 days
$5.50 for >5 seeds, probably more
White grapefruit (probably Duncan or Marsh) - gold standard of grapefruit flavor
Melogold
Ugli Fruit
Satsuma mandarin (only 3 seeds)
Yuzu (only 3 seeds)
Kaffir lime (not a true a lime, cold hardier than regular limes, down to zone 9)
For best chances of germination and fastest germination time, begin sprouting as soon as you receive them
You are most likely to have 100% germination rate with these (although the Yuzu has been in the refrigerator for over 3 weeks now, which might affect chances of germination).
Also willing to trade, if you have any super cold hardy variety seeds (or will have them in the future)