League of Dilemmas: 78 gold.

Just want the opinion of the people here on the boards:

I'm sure everyone has run into this little mild dilemma sometime in their adventures. You're playing a Champion that builds at some point. Whether it be , or idk and idc you're trynna build a TF.

You rush whatever your first two items are, and as you realize you're nearing the third, you go back. Bam, just spent the 365 to finish Sheen.

Now what..?

78 gold to go...

That's like a good 15 seconds of waiting or something, but the powerspike is so tempting...

Do you do it?