Their used gear pricing lately does seem to be getting "too spicy". I've definitely noticed that; it felt like I was seeing much better deals with them in past years. I believe they can command a premium over private sellers, but their prices are creeping over "not worth it" territory for a lot of items - more every day.
Seems pretty typical - their business grew and so did their overhead. And there's no more "economies of scale" to tap out of scraping the used gear churn.
That said, their margins will stop growing as soon as we (collectively) stop selling so cheap and buying so high ;)

