****DEAD DEAL***** Amazon has the Wii Fit U with Balance Board, Software, and Fit Meter for 54.39... it's usually 89.99. 40% off. http://www.amazon.com/Wii-Balance-Board-accessory-Meter-U/dp/B00FE8WKPQ/ref=sr_1_1?ie=UTF8&qid=1395149845&sr=8-1&keywords=wii+fit+u
I personally got a used Balance board at game stop for 14.99 on black Friday, purchased a fit meter for 19.99 and was able to get Wii Fit U software for free. The balance board was sooooo filthy, but I cleaned the heck out of it with lysol wipes. LOL.
If you don't have a Wii U, I wouldn't purchase the system JUST for Wii Fit U. It's a great game from what I've played, but not quite as 10/10 as the first one was. Supposedly they're going to update it with DLC later this year (and regularly), but nothing 100% confirmed yet.
Thanks for the advice. Basically my dad just retired and hes pretty active so I wouldn't buy for just will fit. Maybe I'll just set him up with the regular wii and see how he likes that.