It's hard to believe that neither Patrick or Black Jungle has leucs!! Try Ed's Fly Meat or Quality captives, or Pumilio.com. They certainly are not "rare." Maybe they've just become too popular as a starter frog, because we all tout them so much-- for good reason, of course.
If a pet store can get them, so can you, more directly from a reliable, private breeder, and the guarantees are better in the long run.
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Patty
Pahsimeroi, Idaho
4 D. auratus blue
5 D. galactonotus pumpkin orange splash back
7 D. imitator
6 D. leucomelas
4 D. pumilio Bastimentos
4 D. fantasticus
6 P. terribilis mint and organe
4 D. reticulatus
4 D. castaneoticus
2 D. azureus
4 P vittatus
2 P. lugubris