Hi Michael,
Welcome to the SCF.
Correctly costing up a complete stamp collection can be a huge task.
Depending on the size of the collection, it could take you many months. I don't mean to try to put you off, it's just that there are many different options even within one stamp. You need to know colour variations, watermarks, perforations, type of printing, etc.
Because of the time involved, it is probably not viable to get some one else to do it for you, it could cost more than the collection is worth.
I would suggest that you go to your local library and borrow the Scott's catalogue. The basic catalogue, will give you a rough idea, but if you want to know exact values for all the different types, you will need the specialised catalogue. You will also need a magnifying glass, color identifier, perforation gauge and watermark identifier and tongs and lots of time.
If you can scan pictures of each page of the collection and post them here, we may be able to tell you which stamps may be more valuable than others.
Have fun and I hope you get hooked and decide to stick around.
Steve


