Hi,
I'd like to grow key lime and limequat from seed, but I had no luck finding fruit or seeds in Hungary. I've thought about buying seeds in eBay, but I don't know if I can trust the sellers there (I'm afraid of getting other type of seeds or dried, unviable seeds), and I've read somewhere that it's not advisable to buy seeds from Asia because of the citrus greening disease.
Is there any trustworthy place where I can buy the mentioned seeds? If someone could send me seeds, I would pay happily of course.

Welcome to the forum Drvanger. Many European members here should have Key lime plants They are very common & will fruit from seed in two years. Some should also have Limequat. There are different varieties of Limequat, Eustis being the best in my opinion...