This e-mail is for people seeking information about a computer that's for sale by a private party.
I'd like some more information about the computer you're selling. I'm in the market for a <kind of computer you want to buy> and I saw your advertisement. Please reply to this message with information about the computer's age, its RAM, its hard drive size, its processor speed, whether or not it has a modem or a CD-ROM drive, and if you are including any software. Most importantly, let me know if your price of <price> is negotiable. Please send a reply e-mail as soon as possible. If everything looks good I'll contact you and perhaps we can do business. Of course, if the computer has already been sold, please let me know. Thanks very much.