It's kind of disappointing all this talk about how the prices have shot up... because I never found SNES cheap/easy to collect for ever. It's my favorite console of all time, and I've been actively collecting for 10 years, and I've found surprisingly little over the years (I do have 50+ games, but missing so many of the must-haves). It's also odd to hear people talking about "how easy it was to collect in the early 2000s" when it was NOT for me! I was looking back then!
On the other hand, you can hold out your arms and wander through thrift stores and in a few years you can pick up nearly all the major NES or N64 games....
I really think its the most mainstream console to hold/appreciate its value.
Of course maybe a lot of this talk is people are only getting into the collecting game now, and imagining they were all dirt cheap/easy to find all along, when they never were.
Prices have absolutely shot up just over the last year. I don't know how this site figures out their prices, but they update every day (I believe based on ebay, amazon, and half.com prices).
http://videogames.pricecharting.com/console/super-nintendo?sort-by=name
Just some random choices, over the last year:
(Feb 2012 to Feb 2013)
Adventures of Batman and Robin: 24.18 - 34.97
Chrono Trigger: 42.50 - 71.83
Castlevania 4: 25.38 - 32.58
Mario All Stars: 14.46 - 19.55
Mega Man X: 16.73 - 23.40 (actually coming down, was at 31.04 last month)
Earthbound: 156.23 - 217.50
Super Metroid: 29.09 - 42.98
Those seems like pretty huge jumps for just 12 months. The site only has data back to end of 2006, but shit gets insane if you look at that huge of a timeline:
(Dec 2006 - Feb 2013)
Earthbound: 62.49 - 217.50
Super Ghouls and Ghosts: 5.99 - 13.99
Mario World: 5.99 - 12.50
Link to the Past: 11.45 - 33.85
Final Fantasy 3: 27.82 - 44.63
Super Metroid: 17.95 - 42.98
Some things aren't as crazy. Mario RPG is actually trending pretty low right now, same with Mario Kart. But, the crazy thing is that even though those records go back to 2006, most of them really didn't start to climb up until 2011-2012.