Today I got a MacBook Pro at a slightly lower price because I waited.
You see, Amazon lists a product supplied by more than just one seller. The seller with the best offer usually makes the product page feature.
For the past 2 weeks, the best offer was around $250 more than what was the best offer before that time. The previous seller went out of stock.
Given that I had a few weeks before I actually needed the laptop, I decided to wait in case a better offer comes in. Today, that previous offer came back, from the same seller who listed the product around 2 weeks back.
Without any further ado, I made the purchase. Waiting a few more days saved me a lot of money.