The values of uniforms, especially un-named examples, should only reflect the values of the component parts. Tunic, rank, regimental/corps titles, formation patches and trade or service badges. How does putting them all together on one tunic make them worth so much more? For example, parsing the GGFG offering, an unbadged SWW dated tunic may realize $100, the canvas titles $70 each, the 4 CAD patches, maybe $50 each and the canvas CANADA's $25 each? And the service chevrons, $5. The beret and badge, about $100? Total about $500. (And my valuations may be optomistic.) With no name to verify the tunic, one is taking a big chance.
It is interesting that the tunics in this vendor's auctions received so much attention, while other tunics on sale at the same time saw little action and even went unsold. How much of a cachet is there to having been in an important collection? (Read a certain millionaire collected these, so they must be exceptional.) I wonder if another collection, (and there are some excellent Canadina SWW uniform collections out there), came on the market, would there be as much interest?