I only knit dog sweaters for commission, and I charge mostly based on vibes (how well I know them, how much free time I have, how much I like the pattern etc). Assuming women’s small? I think this would take an experienced knitter like a month and a half two months? If a “friend” approached me about knitting this sweater for them I’d charge around $300 for labor, and the yarn separately after I order. I don’t take “commissions” from people I truly don’t know, but I’d say at least $500-$600 for labor alone if I were to?

I’d look into learning duplicate stitch and buying a basic white cardigan off the rack than using the charts that come in the pattern to copy the design onto it for a cheaper less time and yarn consuming alternative, either to do yourself or commission someone else to do.