The bonus resources and units obtained when i buy 500 1000 or 10000 hidarian crystals are given each time i buy those quantity of crystals or just first time?

(i already know the answer but i'm asking to be sure 100%)

Kelsos, you can get the bonus resources and units once per year. Please note, that higher level "Thanksgiving" medals replace lower level ones, and if you buy 10k crystals and get 3rd, you won't get the 2nd if you decide to buy 1k crystals after that.

Perfect. Thank you for the answer :).