You guys already know about these books.
They are in mint condition: basically brand new.
Currently $250 on Amazon
$50 more, I can include all the workbooks
some schools are kind enough to actually post the implicit curve: see uoft's grading scheme, for example. my understanding is that other schools are similar . . .top 10% get A/A+, next 30 get B+ to A-, bottom 50 get Cs to Bs