Vintage T-Shirt Forum & Community Authentication Appraisals

Picked up this Bad Brains shirt in a mystery bag on whatnot. Everyone on the stream said it’s an original. Wondering what it’s worth?
Measures 20x24

Seem to fetch between $200 and $400, the $400 was recently, but it was labelled an XL, while yours is an L, and that can make a big difference in price. But I would think $200 is good baseline.