No, because people will spend 5$ per TC over a period of time. They look at the 500$ as too much at one time. However, they easily spend that much, and more, over the period of a few months.
It's merely how some people perceive it. It would be more cost efficient for us, but, as stated above, not everyone will buy this.
Anyways, let's not make it 100 TCs. It would only be 500$, seeing as they would give up money in the long run, it can't be used on in-game TCs.
Besides, 100TCs used per person, would effectively skyrocket the current TC prices to AT LEAST 300k+ in a matter of a week.
Hoarding TC after TC, effectively buying up the supply for your own needs, would leave less the people who use them for RT.
Then after everyone is done with the upgrade, we have a huge supply of TCs, but yet no one is willing to lower the cost back down to ~100k.
So in essence, just make it 500$, can't use TCs.