Price is somewhat subjective. If I want a kit bad enough and it fits my other criteria, price could be a factor. But when I look at what the military modelers wind up paying for detail plus all the aftermarket stuff they add, it SEEMS we are still better off.
But, as I have been reducing my stash in a downsizing effort prior to a long distance move, I find offering anything for sale offers are all over the board. It seems better to donate to something worthwhile than go through the hassle.
But I am much more selective these days as I still have about 700 unbuilt models in the stash. At my build rate, I'll need a couple hundred years to get through them.