The psychology behind the $0.99 was explored in depth in Priceless: The Hidden Psychology of Value, which if you ask for my humble opinion, is a life-changing book. Partly the reason for such price tags is that it translates for many as a 'sale' price. Against it, is that it is typically associated with 'hard sale'.

The donation payment system is in its core anti-capitalist, thus anti-commerce, and so prices are accordingly just simple (distinguishing themselves from any sale or hard sale like prices).

Psychology behind $0.99 for paid apps, but $1.00 for donation apps?
I came across this thought provoking article on Stuck in Customs today that makes a strong case to hold off too much investment in DSLR gear, and instead switch to mirror-less cameras like the Sony NEX. The author prefers to call such cameras 3rd generation cameras to prevent any bias.

The crux of the argument lies in the smaller size and faster shooting speeds of the new cameras, while the sensor size is an area where they seem to be lacking (Sony &amp; Samsung cameras are APS-C sized though). Currently the big makers - Nikon &amp; Canon - have practically no presence in this market (Nikon seems to be doing something with the V1). However, they seem to have slowed down the introduction of new entry level DSLR models over the last year as well.

So, as DSLR users looking to build and enhance their kit (there are many like me who've jumped the bandwagon over the last couple of years, and are just starting to build their kit), what are the advantages of sticking with the DSLR system rather than switching to the 3rd gen cameras?

IMO, one point that could cause a massive switch in the DSLR base would be if Nikon &amp; Canon announced mirror-less models compatible with their current lens lineups, but that is a hypothetical scenario.

P.S. There is a similar question on mirror-less cameras, but that seems to be from the perspective of a person starting out rather than a person already invested in the DSLR system.
