That's fantastic that you will get a price adjustment, Kate. There are some things (most) that I am willing to wait for until it goes on sale (or in some cases, even MORE on sale) both every once in a while I'm willing to splurge if I'm positive I will regret missing out on the item if it goes out of stock before I have a chance to buy it.
I'm very loyal to stores (like Ann Taylor/Ann Taylor Loft and especially Nordstrom) that are very generous about price adjustments and make the process easy.
A couple years ago I got a dress on sale at AT, and then the week after the price went down even further by $30. I brought the dress in with tags on & receipt to get a price adjustment, and the AT staff members let me know that in the future, I only needed to bring the receipt in, and didn't have to haul the dress back too.
Nordstrom is even better, especially for online orders. A few months ago I had a price adjustment for an online order processed in 5 minutes through the live chat function, without ever having to pick up the phone. Super easy, and I had written confirmation that the adjustment had gone through! http://about.nordstrom.com/help/livehelp/