[PC] Steam - The Sherlock Holmes Collection (6 Games) - £3.99 (~ $7.45 AUD) - Gamesplanet UK

Very close to the all time lowest price (within 10 or 15 cents) according to ITAD.
Deal is on until 8pm tonight - after that the price will go back to normal.

You will get the following games:

• Sherlock Holmes - Nemesis
• Sherlock Holmes versus Jack the Ripper
• Sherlock Holmes: The Awakened - Remastered Edition
• Sherlock Holmes: The Mystery of the Persian Carpet
• Sherlock Holmes: The Silver Earring
• The Testament of Sherlock Holmes

I think you will get one Steam key for all 6 games as that is what the website seems to indicate.

Enjoy!