As @jond said, 4xBOM cost for retail is hardly out of line. When I worked for a small-run electronics firm making medical equipment, it was priced at about that . . . and we didn’t have dealers taking a cut. R&D are expensive, as is small-run manufacturing in general.
Also, expensive streamers usually come with expensive tech support. Live people answering questions are costly.
Also, expensive streamers usually come with expensive tech support. Live people answering questions are costly.