Nope, nope nope nope nope nope! Very, truly, bad idea!
It will make things way unbalanced. And that money will be only little amounts for Top players! Even if it costs millions or.. Top players will have a huge advantage! Do you wanna fight this build?:

Just look! It wouldn't even barely reach 1.3k!
Seriously, I'd totally pick a "No" if this thread ever had a poll.
And I only have 2 mythical items equipped! Imagine what would top players who have a lot of mythical items in their inventory... I will totally quit the game if this was ever implemented.. And I am glad it's not!