I have several meters of both 3/4" (19.1mm) and 7/8" (22.2mm) brass tube, (0.9mm wall thickness), which are left over from a project which changed direction. They may serve better as ferrules than as scrap. Would suit walking sticks, chisels etc. I can cut to length as required, deburr and give a quick polish. Cost is $1 per inch of material used plus $1 per cut. For example, if you wanted 10 ferrules , each 1/2" long, that would be $5 for the brass and $10 for the cutting, $15 all up. Postage would be in the range of $10 per order except for heavy parcels.
I also have smaller amounts of other sizes of brass tube available, send a pm to enquire.