RE: Donating Cards! Whoever Posts Will Get Free Cards! NEED AZELF X!
While I completely agree with Azelf being $15, I can't value Gengar at $25. Ebay completed listings, not buy it nows, have Gengar around an average of $15, with $16 being it's highest sale recently. Now in terms of playability, Gengar is much higher. However, in terms of you and Is playability, considering I've got Gengar Lv Xs already and you NEED the Azelf X, I'd say Azelf would be higher. But I digress, I hate bringing up monetary amounts in trades, but to be fair to me I have to go by current market prices.
So for me to toss in some cards to make the trade more palatable for you, it would most likely be some TSS you need or a rare that I don't value too highly. That being said, are there any odd rares or TSS you would want as a toss in? Obviously if you won't trade Gengar for Azelf without some other X or something valuable tossed in, that's completely your call, and I'll stop bugging you about it.
EDIT: Beaten to the punch. If ^^this guy will give you two Xs for it, I say go with it.