[ToryBoy]

Don't know if you've compared the prices: (by the way I've left out Del Toro as they seem not to be offering any embroidery at this time).

For a pair of black monogrammed slippers:
Bowhill & Elliott £300
Shipton & Heneage £295

At those prices, one should go bespoke if they can. James Taylor & sons charge £300 for plain slippers and £375 to have a monogram or crest.