Most of the commenters on the latter blog say they have no problem with resellers and feel they deserve any profit they make from such a labour-intensive enterprise. Defending themselves, the resellers make ethical arguments about saving garments from landfill, or about catering to demand from buyers who don't have easy access to op-shops.
Another comment, which I thought was quite shrewd, was that eBay is now many people's first resort for getting rid of unwanted stuff, so the "good stuff" that all op-shoppers are after sometimes bypasses the op-shop economy altogether these days. (What precisely is "good stuff" depends on the op-shopper's tastes.)
My own feelings on the matter were echoed by an anonymous commenter who wrote:
I don't object to reselling but I don't like the way it's become such a theme on this blog. Somehow a great find doesn't seem so great if you just bought it to sell it.
Another thing that bothers me - and I have posted this as a comment on the blog - is when garments bought in an op-shop are mutilated to make them conform to a more contemporary aesthetic. I write 'mutilated' deliberately, because I see garments being altered in ways that don't respect their original designs. To me this seems to miss the point of vintage: and admiration for the styles of the past.
Of course, I've bought things from op-shops with the intention of cutting them up, re-sewing them or otherwise changing them - but only for me to wear. If you're planning to sell these things to other people, then who are you to decide what's "wearable" and what isn't? Surely that's something a buyer decides for themselves, using their own tastes?
Alternatively, perhaps these people who both resell and mutilate consider themselves creative: what they are selling is a certain look. It's akin to being a fashion designer who works only with second-hand materials. Again, I have no problem with this... unless the clothes are being sold as 'vintage'. You simply can't have your cake (trading on the cachet of vintageness) and eat it too (hacking those vintage garments up so they no longer have their vintage shapes).