Someone has reported that if you bought PS3 console online through newegg, you will received a PS3 console that is already updated with the 3.42 firmware. With the current version of PSGroove, and other PSJailbreak clones, you can only jailbreak your PS3 console with 3.41 firmware. That is really a total letdown if you want to buy PS3 just because of the availability of the PS3 jailbreak.
My advice is that if you want to buy a PS3 console, it is recommended to go to the store itself instead of dealing online and check the serial number of the PS3 console or just directly ask retailer what is the firmware version of the PS3 console where you can test. If you still want to buy it online, better buy it with a store with 30 day money back guaranteed or something where you can check the PS3 console whether it is 3.41 firmware installed or otherwise.