I need an intervention

I came up with the idea of using postcards from Custer State Park as my "Save the Date" cards...well, I found some on Amazon, so I bought about 100. Then I was cruising Ebay and found a package of 320 postcards for a $5.00 initial bid... I got caught up in the bidding process and now am the proud owner of 320 postcards(for only $22). So I now have about 500 postcards. Somebody needs to step in and prevent me from making such insane purchases! I guess if all else fails I can wallpaper a room in the leftovers!