*anecdotal evidence*
These price sharks make quite a bit of money off anime fans. They buy the thing, wait for it to go OOP/sell out, and then sell it for way more than they paid for it (Around 30% or more off the MSRP is what they probably paid for it.).
So what you have is a few, select, instances where something goes for a decent amount more than initial purchase price. And the reality is most of it goes for 30% more, if it does appreciate at all, in a standard market. Which mean, oh my, $100 can turn into $130 after, what, a few years? Great return investment
Conversely, I'm selling basics licensing on images for 3 figures per image (and my name is nothing in the field) and can make a few hundred dollars a photo session. If I did a wedding per weekend this summer, I could make several thousand dollars. And that isn't me selling my camera gear to get money back, but if I have to sell it ever, I can gain back the investment in the equipment and possibly profit. On top of that, I can sell single prints as fine art and get several hundred percent return on material costs per print.
Face it, there is no way you can financially justify a serious anime hobby over a photography hobby. Not to mention it introduces me to a ton of people, builds a social network and develop social skills, and gives me an awesome portfolio to indicate I've traveled and so on. Which never hurts.
Or you can be otaku and try to explain why you have pantsu girl on your pillow.
I'm with VB and Sly on this. Car > owning a bunch of Anime DVDs and cases. Having a single car is nice, but having a dedicated, calm, daily is wonderful when you also want to build something that is insane and stupid fun to drive. Because lets face, having your spine compacted because of manhole covers isn't fun every day.