Cremation Questions About My Pomeranian T.P "R.I.P" 01/03/09?

I have questions about cremation of pets. My questions are, Is the cremation expensive. If anyone knows about much it is please let me know. I also would like to know when they cremate a pet do you get all of the ashes back? But I would say the most important question right now to me is my pet ped on Jan 3rd of 2009 and now it is Jan 9th we have already buried him but it bothers me so much to know he buried and I find myself crying alot. I would feel alot better if I could have him cremated and put in a urn so I can keep him in the house. Like he has always loved. So please lt me know if you think its a good idea to bring him up and have him cremated or should I just let it be since he is already buried and also do I sound crazy for thinking and feeling this way. Please Please Please be honest. Love & Peace, Tiff