$3000 ... I spent nowhere near that. certainly much less than a thousand. Granted, I bought many of my books used, but still. I bought a few new ones -- Costanzo Physiology, some anotomy texts and atlases (ok, a lot of anatomy texts and atlases) -- but still it all cost several hundred.
It depends on:
-what school you go to, and how much the school/previous classes/classmates provide in the way of notesets.
-how many books you would like to buy, despite MS2s telling you that books X, Y and Z collected dust on their bookshelves.
-whether you buy used or new (if you buy used, many of the books at the used book sale might be dusty books X, Y and Z, so beware. 3rd and 4th years, if you can get a hold of them, might be willing to get rid of books that 2nd years want to hold on to.)
-whether you figure in selling back books X, Y and Z next year to gullible first years in your budget. (fortunately, used books don't depreciate much.)
-whether you buy from your school bookstore, and how much of a rip off it is there (or whether you're willing to buy online, find the best deals and wait for ground shipping from Canada).
-whether you have some idea in your head that you should build a medical library starting now.
As for supplies, we don't buy till second year...