Should I buy Bioshock:Infinite now or wait for 75% OFF

It's a good game (in my opinion). Worth the full price, but if you were ready to wait for 50%, you can wait for more if you want to.

It'll be a while before it'll go 75% off. If you're interested in it and will actually play it after buying it, I'd go ahead and buy it.

wait

Unlikely to be 75% off in this sale. It was already a daily deal at 50%?

I don't think it will go past -50% during this sale. But you can try and wait, I think in any case it will be among the "encores" at the end.
If you really want it in this sale, just buy it and start playing it immediately, so you minimize the risk of regrets. :D

why would it go on a 75 % off sale if the daily deal is Bioshock Infinite being 50 % off.

You won't get 75% off in this sale. I doubt it will go 75% off even in this years winter sale. It's too popular. They only do those large discounts for games with low sales. Wait for last day and buy it.

50% still expensive.

game which are on daily deal/flash sale/community choice WONT GET A BIGGER DISCOUNT

it'll probably be 75% off during the encore sale

Get it via trade (around $10-$15), it was free with AMD cards.

The firm who published it 2K games has posted a minor loss despite such a good year (bioshock borderlands and GTA V coming) so my guess max 50%.

Buy it, daily and flash deals show max. discount in steam sales.

If a game turns up in the flash/daily sale, then that's the maximum discount its going to have in the summer sale.

It won't be 75% off for a long time, but eventually it will happen. It just depends on how long you want to wait. It won't be during this sale, though.