Turning $200 in to $10k it's a lot of people dream come true!! ...Congratulations!
Well i start like a month ago and i did invest $4k in the game and all in cards as i do love the game a lot and i really wanted to build up my deck (my collection power is now at a bit over 103k - all my own cards)
I really don't know why but i do have a felling that this is going to be my smartest investment i ever did... time will tell!
I totally feel you with the prices of the packs... i will cry of happiness to open few... but i need to think as well at the new packs that will be release soon. If i keep on buying now the old packs most probably i will end up not being able to buy the new ones....
I do have do 5k DEC in the game account and i am killing myself what to do... should i exchange them and buy a pack or not!
Take care and good luck now with the season rewards; i hope both will turn some gold foils!