Immigration Gone Astray

Haven’t posted for a while because I was away in Miami.. anyway just wanted to post a side note and see if anyone had any suggestions.. lost my I 94.. the little departure form in my passport.. contacted the Mission and they said it would cost $320 to replace!!! how can this be?? Most of the time when I leave the country they don’t even collect it.. do you think I will have problems leaving the country?? I might just take a quick trip up to Canada and see how it goes…