Hacking Looking to buy used wii u, some question

[Xellos2099]

I am looking to buy used wii u and i got soem question when looking on ebay. How come i see a lot of "system only" listing. Is wii u really prone to failure? Also is the tablet controller really needed or a classic controller will do? Finally, what seems to be a fair price for a 5.51 system?

 

[Azel]

the tablet is mandatory sadly.

not sure about failure, mine runs fine, and so do my friend's.