High quality fabric for cheap? The Secret is Second-hand.
However, there are ways to get high quality fabric at very low cost. Sometimes even for free! Using second-hand fabric can be a great option for getting large quantities of fabric for low cost.
The Makings of an X-Men Dark Phoenix Performance
I latched on to Jean Grey from the X-Men series right away. She was smart, very powerful, and kind. When the 3rd movie came out, I was entranced by her transformation. I made the Phoenix cosplay not too long after my dad and I saw the movie together, and wore it to multiple comic cons in Michigan and Minnesota. It's one of my favorite cosplays I have made.