Caruso was founded in Soragna, in Emilia-Romagna, and built its business making tailoring to other companies' specifications before putting much weight behind its own name. That order matters. The factory's reputation was established among people who buy tailoring wholesale, not among people who buy it in shops.
The result is a house whose ready-to-wear and made-to-measure come out of the same building as work carried out for labels with far larger marketing budgets, but whose own name means very little to a general audience. What Caruso sells under its own label is not a diffusion line or a licence.
Resale pricing follows name recognition more closely than it follows garment quality, and Caruso is the clearest case of the gap that opens up when the two come apart. A buyer scrolling listings recognises the houses Caruso supplies and does not recognise Caruso, so the jackets sit at prices set by the label rather than by the cloth and the make.
The upper line, sold under the Aida name, is where the better cloth generally goes, and it is worth knowing the word before you search. But the line name is not a substitute for looking at the jacket. Fabric composition, lining condition and button material are all visible in listing photographs if the seller has taken enough of them, and a seller who has not is the more useful signal.