There's a seller "sarracenien" I've bought flytrap seeds from them several times and I always had 100% germination. Quick shipping too for being located in Germany. But if you're looking for Flytrap seeds I would never buy from anyone else again besides the Flytrap Store they just have the best deals ever hands down.
I've bought seeds from users "carnivoreseeds" and "killerpflanzen_top-saatgut_und_mehr". 1st is from Czech Republic and the 2nd is from Germany. I am happy with both. Bought at least a half dozen species from each. Everything germinated from killerpflanzen and most everything germinated from carnivoreseeds. I still haven't gotten S. leuophylla or purpurea to germinate but everything else (flava v. ornata, rubra ssp. jonessii, dews and flytraps) had about 90% germination, and they threw in 2 bonus packs of seeds for free.