
Try your local library system. Many libraries subscribe to the Scott stamp catalogues for their reference departments.
Once they receive the 2017 edition, you
might be able to purchase an older copy from them so they don't have to store it. You might not get their 2016 edition, but maybe 2014 or 2013.
Shipping can be kind of expensive on one of these due to their weight. My 2014 soft cover edition weighs 4 pound 14 ounces; call it 5 pounds. That's $4.15 using media mail, which takes about 10-14 days to deliver.
I have also seen stamp supply companies sell their remaining copies of the prior year's catalogues for $20 when you buy something else from them.