Whats the BIGGEST regret so far for you in the summer sale?

Not waking up earlier. There was only about 15minutes left on the Flash Sale for Bastion when I noticed, and when I tried to buy it, Steam was a bitch so I missed it...

Bastion. I regret buying it.

Magicka lags despite having better than the requirements, and it's impossible to pick anything up in surgeon simulator despite wrapping my hand around the things perfectly. Also, I spent the money I was saving for game dev tycoon, but the cards I'm getting are so cheap I can't afford it anymore.

Missed the Ys Chronicles flash sale. Hoping it comes back as a daily at some point.

atm chivalry...isnt anywhere near as good as i was expecting

buying ARES... it sucks

Crafting a Mystery Card set the second I could instead of making mad monies. I thought there would be something cool for crafting it. :(

Being too lazy to get a job.

"You have spent approximately $243.77 USD in the store since the sale began." Enough said.

I regret not buying 20 copies of tomb raider anniversary/underwold instead of 10.

Getting rejected from the job I wanted last week - my dream job too :( - so I could afford stuff.
Not getting Bastion when it was on flash sale.

nothing so far. Got 4 games from selling cards and 3 from buying it with only $10 was planning to get a lot of games so so far so good

Buying Zack Zero... The game won't even start on my laptop yet I can run games like Fallout 3(30FPS), Borderlands 2(around 18FPS) etc...

spamming the buy button and now it's giving me errors :(

Buying the Sniper Elite: Franchise Pack. Since i thought it also includes Sniper Elite: Nazi Zombies! :S

I regret not selling my cards earlier. I honestly hadn't given any thought as to whether I was going to keep them or sell them, and by the time I realized I had no desire to keep them, the prices had gotten really low. Even still, I was able to get about $5 total, so that was $5 I didn't have to pay for games. I ended up just spending the money on giveaways here, though.

voting for war z for the community deal -,-

None yet

The one regret I have from sales is buying Dead Island in the Winter 2011 sale. I cannot stand the game.

Nazi Zombie Army for 5$

I guess my only regret would be buying Strike Suit Infinity and Ridge Racer Unbounded. I mean i got Strike for only $1.74 and for the cards and Ridge Racer is fun, but different than most racing games I have played. I do think it's nice to have been able to put $20 on Steam the day of the sale and buy 6 games and 3 DLCs. Cards have helped me with that.

I want to buy Bad Rats but I have only 0.15€ left in my wallet. =)

The fact that I lost my card.

None so far, but the lowest quality game I've bought so far has to be Two Worlds 2. Not that it's a bad game at all, it's just the lowest rated one I've bought. I'm carefully picking my games this sale.