Steam is holding a Rockstar Weekend sale where the entire Rockstar collection is on sale for 50-67% off. There is also a one day deal each day with today’s being L.A. Noire for $5 (75% off) or $7.50 for the complete edition.
The Rockstar Collection which includes: Grand Theft Auto IV, Grand Theft Auto: Episodes from Liberty City, L.A. Noire and Max Payne 3 is just $29.99 (67% off).
The Grand Theft Auto: Complete Pack which includes Grand Theft Auto, Grand Theft Auto 2, Grand Theft Auto III, Grand Theft Auto IV, Grand Theft Auto: Episodes from Liberty City, Grand Theft Auto: San Andreas, Grand Theft Auto: Vice City is $24.99 (50% off).
Remember that it is best to wait till the last day to buy anything that isn’t a daily deal in case the price gets reduced.
All games on Steam are for the PC (or Mac where noted) and are digital downloads only. Prices are in US dollars and exclude tax.