We'll see what happens. I think a lot of folks have really started to re-evaluate their plan since the announcement that the first 2,000,000 regular sale packs will also require vouchers - and that the voucher drop rate doubles after the pre-sale...
Of course, people are still paying 2x the actual value of Chaos Legion packs on Hive-Engine right now, that they can't open until regular sale, and that come with no airdrops or other perks...
So it's safe to assume that there's a lot of uninformed money swirling around - so there's a good chance that things keep moving in ways that are totally illogical.
My guess is that the last 1-3 days of pre-sale will see a big spike in voucher price, as people try to get together their bulk buys... If vouchers are over $25 again like they were on the first day, I might just sell all of mine and skip the pre-sale completely.
RE: Will Voucher Prices Spike At The End Of The Pre-Sale Promotion