yea, it is definitely a luxury to have a bespoke suit made to your size and specific order and made in the highest quality. generally speaking, if you were to get a basic bespoke 3 piece suit from the houses on savile row, depending on their history there and ranks, it would cost around £3000. and it just goes higher and higher.
some very old houses on savile row include Gieves and Hawkes, which is located on no.1 of savile row and Anderson and Shepherd which i believe is next door i think. alexander mcqueen was an apprentice at Anderson and Shepherds.
i cant say im an expert on bespoke tailoring, though i am studying bespoke tailoring, but i do not have a heavy intention of venturing into this business later on.
some argue that italian bespoke is better than english bespoke or vice versa but it just depends on your appeal. they have different styles of working and making.
there is definitely a place in the world for bespoke tailoring, especially when you get rich clients who have, let's say, difficult body shapes to compact with just regular ready to wear luxury suits.
also with the comeback of more women's tailoring in high fashion, it might further expand the bespoke bussiness in terms of women's wear, where as it's still mainly men's wear based.