Is this a scam?

Hey all I listed a classified ad for something I am selling and this guy e-mailed me this message just wondering if this is a scam or not...Hello, Thanks for your mail, well i am okay with the price, and also waiting to see some pics too,i will want payment to be asap, i will go about payment by instructing my client in the states to issue you a certified bank check of $5000 and this should take care of all expences in this transaction, what you will do once you have recieved it is to cash it, deduct your own money($1000) and the wiring charges and wire the balance to my international shipping agent through Western Union Transfer,once he recieves the balance will come over to your location the very next day for pick up, now the money wired to the shipper is his fees for his services, transportation to your location and back to me, also for all charges that may arise along this transaction cos i will want it to be delivered to me safe and sound without problems, i shall send you my shipper address as soon as i contact him, al l i need of you now is to mail me your full name and contact address as well as phone number so that i can forward it to my client who will issue you the check, let me know asap if you are still intrested so that we could seal this on time.Best Regards,Mr Chuks..............