Like the thread's title, share your own guidelines and tips on buying games. This is from my personal experience on buying games.
Chaos Master's Guideline
1. Check what games that you are going to buy. Make sure those games are games that you have already considered playing.
2. Check reviews from video game magazines or sites. That way, you can check whether those games are good or not before buying it.
3. Save enough money for buying games and other uses. Do not go overboard on spending money on games instead of food and other necessities. Plan your budget management accordingly.
4. Check whether the games that you want to buy is worth it. For example, when you go to a store and think that the God of War III's price in that particular store is too overpriced, leave and check it out at another game store.
5. Try and negotiate with the retailers for lower prices for games like PS3 and Xbox 360 games. If they do not budge with your request, leave and go find another game store.
6. Ask your friends whether that particular game is good enough. It is wise to ask someone's else opinion. Don't just ask one person, ask more opinions from other people on that particular game.
7. If possible, do not buy the same twice unless your original copy is damaged or the new copy has a lot of additional contents compared to the original release. For example, Fallout 3: Game of the Year Edition has all DLC contents whereas the original Fallout 3 does not have the DLC contents.
8. If there is a game for multiple consoles, if possible, buy only one copy for one particular console. For example, Resident Evil 5: Gold Edition is available for PS3 and Xbox 360. It is not necessary to buy both to complete your game collection. It is sufficient to buy one copy only, and it saves your money.
9. If the games that you are looking for is not available in any stores nearby, check Ebay, Amazon, and other sites to buy it online. You can also buy used games from the certain gaming stores, as not all stores sell or buy second hand games.
10. If you have just bought a particular console and wanted to buy old games, find the games that have budget range like Playstation 3 Platinum Range or Greatest Hits, or Xbox 360 Platinum Hits. The budget range games have lower prices compared to the original prices (usually half the original price). Here is an example:
Uncharted: Drake's Fortune (3 Versions)
From left to right: Platinum Range, original version, Greatest Hits.
Mass Effect (2 Versions)
From left to right: Original version, Platinum Hits.
Although the box art differs, the price is cheaper than the original release. If you are a collector, it would be best if you sought out the original versions. However, it won't be easy as old games are extremely rare to find. Do not expect it to be cheap.
Here are the list:
PlayStation 3 Platinum Range (North America region) -
http://en.wikipedia.org/wiki/Platinum_Range#PlayStation_3_titles
PlayStation 3 Greatest Hits (PAL region) -
http://en.wikipedia.org/wiki/List_of_Sony_Greatest_Hits_games#PlayStation_3
PlayStation 3 The Best (Asian region) -
http://en.wikipedia.org/wiki/The_Best_range#PlayStation_3
PlayStation Portable Platinum Range (North America region) -
http://en.wikipedia.org/wiki/Platinum_Range#PlayStation_Portable_titles
PlayStation Portable Greatest Hits (PAL region) -
http://en.wikipedia.org/wiki/List_of_Sony_Greatest_Hits_games#PlayStation_Portable
PlayStation Portable The Best (Asian region) -
http://en.wikipedia.org/wiki/The_Best_range#PlayStation_Portable
Xbox 360 Platinum Hits (Mostly all regions) -
http://en.wikipedia.org/wiki/Platinum_Hits#Games_in_Platinum_Hits_for_Xbox_360_series
Hope this will help you guys. Also, don't forget to share what are your advices on buying games as well.
Chaos Master's Guideline
1. Check what games that you are going to buy. Make sure those games are games that you have already considered playing.
2. Check reviews from video game magazines or sites. That way, you can check whether those games are good or not before buying it.
3. Save enough money for buying games and other uses. Do not go overboard on spending money on games instead of food and other necessities. Plan your budget management accordingly.
4. Check whether the games that you want to buy is worth it. For example, when you go to a store and think that the God of War III's price in that particular store is too overpriced, leave and check it out at another game store.
5. Try and negotiate with the retailers for lower prices for games like PS3 and Xbox 360 games. If they do not budge with your request, leave and go find another game store.
6. Ask your friends whether that particular game is good enough. It is wise to ask someone's else opinion. Don't just ask one person, ask more opinions from other people on that particular game.
7. If possible, do not buy the same twice unless your original copy is damaged or the new copy has a lot of additional contents compared to the original release. For example, Fallout 3: Game of the Year Edition has all DLC contents whereas the original Fallout 3 does not have the DLC contents.
8. If there is a game for multiple consoles, if possible, buy only one copy for one particular console. For example, Resident Evil 5: Gold Edition is available for PS3 and Xbox 360. It is not necessary to buy both to complete your game collection. It is sufficient to buy one copy only, and it saves your money.
9. If the games that you are looking for is not available in any stores nearby, check Ebay, Amazon, and other sites to buy it online. You can also buy used games from the certain gaming stores, as not all stores sell or buy second hand games.
10. If you have just bought a particular console and wanted to buy old games, find the games that have budget range like Playstation 3 Platinum Range or Greatest Hits, or Xbox 360 Platinum Hits. The budget range games have lower prices compared to the original prices (usually half the original price). Here is an example:
Uncharted: Drake's Fortune (3 Versions)

From left to right: Platinum Range, original version, Greatest Hits.
Mass Effect (2 Versions)

From left to right: Original version, Platinum Hits.
Although the box art differs, the price is cheaper than the original release. If you are a collector, it would be best if you sought out the original versions. However, it won't be easy as old games are extremely rare to find. Do not expect it to be cheap.
Here are the list:
PlayStation 3 Platinum Range (North America region) -
http://en.wikipedia.org/wiki/Platinum_Range#PlayStation_3_titles
PlayStation 3 Greatest Hits (PAL region) -
http://en.wikipedia.org/wiki/List_of_Sony_Greatest_Hits_games#PlayStation_3
PlayStation 3 The Best (Asian region) -
http://en.wikipedia.org/wiki/The_Best_range#PlayStation_3
PlayStation Portable Platinum Range (North America region) -
http://en.wikipedia.org/wiki/Platinum_Range#PlayStation_Portable_titles
PlayStation Portable Greatest Hits (PAL region) -
http://en.wikipedia.org/wiki/List_of_Sony_Greatest_Hits_games#PlayStation_Portable
PlayStation Portable The Best (Asian region) -
http://en.wikipedia.org/wiki/The_Best_range#PlayStation_Portable
Xbox 360 Platinum Hits (Mostly all regions) -
http://en.wikipedia.org/wiki/Platinum_Hits#Games_in_Platinum_Hits_for_Xbox_360_series
Hope this will help you guys. Also, don't forget to share what are your advices on buying games as well.
