Noob question about grading...

[kllrbee]

Hey guys,
Please excuse my ignorance with these questions. I tried to search, but I think because my questions are so basic, I couldnt really find anything.
Im new to t206's, but Ive been doing pretty good lately picking up lots of raw commons. Im about 40% complete and have about 15 hof's (graded).
Anyways, when I get closer to complete down the line in a year or 2, Id like to send the raws to SGC for grading.
Im assuming about half the set will be raw (commons mostly).
Well, I have never sent anything EVER in for grading. I also have some others I would want graded besides 206's (57 Mantle, Williams, 58 Clemente, etc).
Anyways, I noticed its like 10 bucks a card, so if I send 250 206's, thats 2500 bucks? Obviously, thats how the math works out, but man, thats alot.
Is that what you guys do or do they offer like bulk deals?
I dont mean to complain or sound stupid, I just dont know how it works.
So can someone school me or provide a link?
Thanks fellas