About two days ago I found a huge lot of ponies for an amazing deal on offerup, I message her and she said they were still available. I was so excited! the lot included four big brother ponys and cutasourous. so we confirmed everything and that I would pick them up on wendsday, she asked today if I could come and I said I was very busy. 1 hour later she messaged me that she sold it to somone else because "first come first serve" I am so upset and angry, this has happened to me so many times!! just last week I drove to a toy fair an hour away that said they had ponys on the flier I paid 10 dollars to get in but everyone we asked said they had them but didn't bring them...... how do I improve my pony luck?