Rotary cutting kit 50 dollars
Sewing machine 100-150 dollars for a basic Walmart type machine
Assuming you have an iron and board most people do
Basic how to beginner book for reference 20 dollars
I would say 250 easy unless you hit thrift stores and find bargains.
This doesn't include fabric thread scissors, seam rippers, pins, your basic sewing kit
BSK would probably be another 25 dollars
That's just my estimate
Sure is an expensive beginner hobby when you think about it.
I used my aunts stuff until I was sure I wanted to invest in quilting and slowly built up my supplies