Another ditto from me, for what Cari said!
The ONLY fabric that I treat as extra special are fabrics that have come from the clothing of deceased family members. Those fabrics are priceless to me, and utterly irreplaceable, so I am very careful with those.
But everything else is equal in my eyes, whether I bought it full price at a LQS or picked it up off of the free table at a guild meeting. I do horde some fabrics for myself, but that has more to do with the print, the color, or where I bought it (souvenir from a special trip) than anything else.