Elated by my "win", I headed to Metro Textiles, which is rapidly becoming my go-to fabric store when I have a project in mind and need instant gratification. It isn't the largest fabric store in the area; in fact it is a rather small space. But it is chocked full of a rapidly changing inventory of the best priced fabrics in the garment district (IMHO). And then, of course, there is Kashi, the incredibly helpful owner. Just tell him what you are making and he will begin pulling out bolts for you. Or if he catches you admiring a fabric, he will tell you exactly what you ought to make it into.
For my maxi dress, I bought this fun knit:

The pattern repeats every 30 inches or so. I bought enough, I hope, that I will be able to lay out the fabric in a way that goes really well with the dress pattern.
And, just because I liked it, I bought this not-your-average plaid:
I had seen it on an online fabric store for $12/yd plus shipping. Kashi gave it to me for $5/yd. I think I will either make it into a jacket (Kashi says jacket) or perhaps a pencil skirt for the fall.