In the UK you can get wii's from £20-30 and while the wii u has wii compatibility most wii's have gamecube compatibility that also adds a huge range of games including many classics.
The PS3 is not dead, as you can see on this site week by week it easily outsells the wii u often approaching 2:1 and that is with hardware base already at 80 million plus.
http://uk.ign.com/games/upcoming/ps3
http://uk.ign.com/games/upcoming/wii-u?sortBy=releaseDate&sortOrder=asc&filter=latest
It has to be said the ps3 ongoing is likely to get far more versions of multi-format titles than wii u and be better supported in the future for such games. Just look at 2013 to see how many major multi-format titles weren't available for wii u. So I would say the ps3 could well be more future proof than wii u.
http://en.wikipedia.org/wiki/2013_in_video_gaming
Maybe I'm wrong here but I just see it as slightly dodgy owning two consoles that are commercially struggling. If a publisher decides not to bother with formats that are struggling at retail we could well see games released on 360, PS3 and PS4 with no xbone or wii u versions.
I personally think the wii u is better combined with a ps4. The PS4 provides the best console versions of multiformat games plus a library of games from developers all around the world plus you have Nintendo's brilliant games for wii u (but not much else).
