List of price bugs during the current Summer Sale

Dark Souls (Russian store only) - ??% off
It was 99% off (5 rubles (≈$0.15) instead of 203 rubles (≈$5.89)).

it was 99% off

There's no way to activate that on US-based Steam accounts, right?

What period counts as a pricing bug? Or we're just intrested in insanely big deals (like the 99%)?
For example Super Meat Boy started with -66%, then got fixed to -77%.

A friend told me that this game was 68% off. Almost nobody has noticed.

I think Valve complete pack was 75% at first then they changed it to 50%, along with other HL packs etc...

Farm your life was 100% off haha. Was £-0.01. You couldn't buy it though.

Nothing else yet? Seems like only 2 or 3 of these listed were actual errors.

Valve Complete Pack 75% off isn't a price error at all.

Does Daily Deals taking like a full minute before getting the pertinent Daily Deal discount count? (ie. they were with default discount/no discount for a minute or so)

Lost Planet 3
Flash Sale 50%
Sale Page Shows 75%

I would add the glitch on amazon : Age of Empires 2 HD + The Forgoten DLC for $2.5 US (no quite Steam, but a price bug neverless)

Valve complete pack was not a price glitch

Kind of sad. I miss Dishonored GOTY, Don't Starve, and Just Cause at a pittance.

I remember Just Cause having a -97% discount in 2011 summer, it was about 0.27 euro. Not a bug tho, it was a hidden sale or something.

appropriate thread is approriate

there was a bug for dayz too that it were 50% off ( or something like that i cant remember ) and they fixed it around a hour

Not sure if this is a glitch or just a "hidden" sale, but if anyone is interested in Myst...
EDIT: Removed

Can't Stop Laughing bundle was 90% off when Castle Crashers went to that discounted price, and now Syberia's discounted price has transferred to an Adventure game bundle.

Space Hulk was off 81%. It's now corrected, just for completion's sake.

Awesomenauts

1 copy - R$ 1,69 U$ 0,99 (it's on 90% discount)
3-pack - R$ 5,24 U$ 2,99 (it's on 85% discount)

Nether was -105% for a few minutes when it came out on sale. Steam was really crowded so I don't know what was gonna happen if I bought it. It was R$ -3 in brazil

When Castle Crashers went to 90% off there was a bug in the Can't Stop Laughing Bundle that caused it to go to 90% off. Basically you could get CC and BattleBlock Theater for cheaper than just BBT. Even the 2 pack of BBT would cost more than two copies of the CSL Bundle.

BattleBlock Theater was $3.75USD
Ultra Baby's Co-op Chaos Pack (just a BBT 2 pack): $6.25USD
Can't Stop Laughing Bundle (Castle Crashers and BattleBlock Theater): $2.49USD