I have a limit to the amount I will spend, but I do love when I find the "Perfect Card" for someone. Pugs for my dad, White fluff pups for my mom, Special Quotes for my best friend...etc...It is worth it to me to send it and show them I was thanking of them.. Otherwise I will use my personal notes or cards.
I also appreciate the perfect card given to me. I know they took the time to search for it or thought of me when they saw it.
I actually have been saving one card for a young man who is in Medical School. I purchased it the day he announced he would be attending Medical school. For his graduation I will pop it into the mail.
When our daughter was young, I had her make her own cards. I just used one of her drawings had her "sign it" and then I would date it, pop it in an envelope or roll it up with some ribbon .