A line of anything already pegs you as a run-of-the-mill influencer, exploiting the parasocial relationship your victims have with you to peddle them substandard ware at high markup.
I am always shocked when I see the prices for "merch". Why does a hooded sweatshirt, that might cost 10-20 USD at Uniqlo, cost 55 USD as "merch" with a 2-5 USD silkscreen print. I agree: It is absolutely "exploiting the parasocial relationship your victims have with you".
Those are pretty high prices. Are they manufacturing those sweatshirts in the US or other Western country, or are they just positioning themselves as premium brand and selling with 400%+ markup?
Or has the clothing market in the US hollowed out in the middle completely? That's what I'm worried about where I live (Poland, EU) - I feel like the middle tier, of normally priced, regular quality clothes for regular people, is all but gone now, leaving us with the choice between a) second-hand stores and bazaars selling counterfeits imported from the East, and b) lifestyle brands selling rags at ridiculous prices.
