The HD versions are still available on Wii U which is a 1080p console. The GCN versions of these games have had their prices go through the roof and accessibility is continually getting lower. There's a clear choice here
So? The HD versions are hardly inaccessible at this point and they're not what I would consider the definitive versions of the games
This is such a good deal compared to the alternative of releasing the ported HD versions for $60 that Nintendo would never do it