you are right, MOC and loose Greeks tend to be very close, price wise! About 8 or 10 years ago, there was a huge glut of hundreds of MOC Greeks for like $70 each on ebay, if I remember correctly. ALL MOC, all in good shape, and all from the same seller, possibly they found a warehouse full or something! Ever since then, MOC prices have been close to loose prices, and some ponies are more common MOC then they are loose!