If you give it time, eventually it will come to you. Again, every trader has a different value aspect of a pin and you just have to find the right trader. Never giving up is a big part of it. The pins are out there and in time, someone may need to sell their set or just not really like or need it anymore. be optimistic. Even if it goes up it is usually temporary and in time it will come back down or like I said, just finding the right trader can make all the difference.
My trick is to empty my Paypal account. If I want to get money on my account, it takes about six days so I'm always late when I want to buy some overpriced grail. So I end up not buying the grail because my money isn't on my account yet. Bit of a weird trick now that I explain it, but it has helped me save up this week.