I was wondering if anybody knows about any good pieces of equipment fit for recording sound effects for games. If you can, also tell please me the price range for professional equipment.
Recording sound effects is an expensive process, and requires sound-proofing, expensive equipment and professional actors / real life objects.
Game studios and Film studios generally have huge sound banks from which they take basic sounds and mix, filter, compress and generally manipulate the basic sounds to their needs.
The Wilhelm Scream is a great example of re-use of sound effects in films: I never noticed it until I saw this video and now I hear it everywhere!
I believe that a lot of the work a Sound Designer has to do is find the right sounds from a sound bank and mess about with them until they're perfect for the game. This is why I think that with any basic recording equipment you could start recording and just use noise filters and compression to get some ok quality sounds. If you're starting off the best thing to know is how to use filters and apply sounds to a certain situation.
Software-wise I know SoundForge is widely used for sound editing, I really think it's a great, but expensive tool. For other software you can search the site, but Audacity is a good free sound editing tool.
You can then take a look at this question to get some free sounds : Where can I find free sounds for my game?
Equipment-wise you'd be best going to a local store and asking for professional advice; the price is dependant on your budget and the target of what you want to do exactly.
To record sound effects, you need a decent recording device and microphone. You do not need to spend a lot of money. For example, here is a nice Tascam stereo mic for iPhone around $69 dollars. Couple that with a good audio editor on a computer or iPhone and you are ready to go. Companies like Blue Microphones also make inexpensive high quality microphones and audio interfaces for PC or Mac which you can use to record your sounds.