That may depend on region. These still exist in the suburbs outside Birmingham, AL. Last I saw the prices varied from $15-30 for a wash, wax, detail, and hand dry.

They don't offer an oil change though, I've never seen a wash+detail+oil change in the area. At scale I'd assume they could do it for closer to $50, if $35 was a 2005 price that's on par with inflation and beating inflation for some industries like food.

My most recent reference was $35 in Indianapolis in 2017. It doesn't surprise me that it'd be up, but it surprises me that it doesn't exist in New England. $60 wouldn't seem out of line to me, given that a quick lube station will change my oil for $20 and an automated car wash is another $17.