I agree with Imcubillo. It can get expensive so you start with the most valuable or sought after books. You can save on shipping by going to a convention that has CGC or CBCS attending but then you have the cost of the show.

I would think that you grade the ones that make sense from a monetary standpoint. The whole pressing and grading process will be about $30 something per book plus shipping. So in my opinion you take that into account. If you have a $100 raw book and yours is in what appears to be prestige shape that when rated it becomes a $500 book then monetary the $30 bucks makes sense. Same thing for older golden age books that may be in lower grades. Start with your big boy money books and work your way down,