Unless I stumble upon a particularly inspirational reference photo, Regressionist portraits are generally done on commission. Taking roughly 15-20 hours of work, basic single-person portraits can generally be commissioned for around $500 in these sizes: 15X30, 16X20, 18X24, 20X20, and 20X24 inches. Smaller sizes or portraits with extremely simple backgrounds can be done more quickly, and therefore at a lower rate (as low as $250: example). Larger sizes and portraits with more than one individual or a lot of extra detail take longer and naturally cost more.
Interested in commissioning an expressive, uniquely stylized portrait? Just let me know.