This is an interesting site - Freedom of Choice: it reveals the price of this election for each party (in Ukrainian only, unfortunately; its English part is very outdated).
The list of overall expenses (in US dollars) is here, and the money spent on political advertising (in hryvnias) is here.
If I understand it correctly, Yushchenko's Our Ukraine Bloc has spent $131,721,692 on this campaign (at various levels); Yanukovych's Regions of Ukraine $121,207,286; Yulia - $93,465,614. All parties' total is $788,878,405.
It's nothing, of course, compared to what used to be Mikhail Khodorkovsky's personal fortune ($15 billion or so), but it's still quite a waste for a nation that pretends to be impoverished and all that.
(Just noticed it's April 1 already - but alas, this info isn't a joke.)