It would definitely be higher.

Lower supply tends to drive the price up.

I saw this in my specialized science field too, in California a couple of decades ago. Real wages for that work have dropped 5 fold at least, partly due to automation, but I saw labs that were 100% immigrants, many H1Bs. Not complaining, just observing. were H1Bs necessary though? No. Many US born in that field found themselves jobless upon graduation. It was all about cheap labor

	▲	stanford_labrat 4 days ago \| parent [-]
		yup, anecdotally the majority of postdocs these days are internationals who are willing to work 60+ hour weeks on $50k a year, for the infinitesimal chance to land a R1 tenure-track faculty position. americans have no interest in getting a phd and then subjecting themselves to this kind of indentured servitude.