Steam – What happens with Steam trading cards from sale after the sale

Yes,I bought an item for Dota 2 online rather than in-game shop and my progress towards the card increased,don't see why it would be different for TF2.

When you buy items online the system asks you to log-in with your steam account to finish purchase;in-game store is essentially just a simple game web browser to display the original online store(Why?It is easier to maintain one store than 2).So in the end whether you buy something online or in-game it goes thru the same account and the same system.

Also the system is retroactive,meaning all things you bought before trading cards will be counted as you bought them now.So the system will checks your receits and they are the same for both stores.

If you want to check for yourself you don't have to spent 9$,you can purchase the cheapest item you find and then check if you "progress towards next card" has increased.

Valve days change over at 10 AM Pacific Time, so an expiration date of the 27th implies that the moratorium will expire sometime between 10AM Pacific on the 27th, and 10AM Pacific on the 28th.

The duration of the moratorium is 5 full days, so if your password is changed at Noon UTC, you will be able to trade again at Noon UTC.