back to expensive fabric...you are right. Just be selective that what you do buy, you purchase it because you love it and NOT because it was too cheap to pass up. That second kind of fabric will go into your fabric crypt and you'll hate it every time you see it.
I inherited two stashes, and both women had wonderful taste...but it wasn't my taste and about 80% went to new homes.
The other stuff in the ad? As your interest and skill grows (as with any interest) you will know when you need certain tools. Wait.