Short answer
Ready-to-wear is a finished garment sold in a size range; made-to-measure and bespoke describe different processes that vary by maker. A standard size may work well for many people. Compare fit, alterations, delivery time, return terms and the custom process for the particular garment before deciding.
The case for ready-to-wear
Good RTW is one of the quiet achievements of modern clothing: canvassed jackets at accessible prices, available this afternoon. If your body is near the standard the sizes assume, a good RTW suit with local alterations is a perfectly rational wardrobe — and we will tell you so at the fitting rather than sell you a pattern.
When to ask about a custom process
If a ready-to-wear garment repeatedly needs the same changes, describe those fit issues to a provider and ask what its measurement and pattern process can address. Ask which changes are possible, what fittings are included and how the provider handles any remaining fit concerns.
The middle path, honestly described
Between them sits made-to-measure — our full comparison of all three covers when each is right. A useful rule of thumb: RTW for quantity, MTM for convenience, bespoke for the garments that matter most — and for bodies the standard sizes gave up on long ago.
Every comparison on this site follows the house rule: we name the cases where the cheaper option is the right one. Guide prices referenced: Essential €420, Signature €550, Prestige €770.