Is there any way to differentiate a mass market paperback from a trade size paperback when ordering  books.   I know that I have some books on my shelf that are listed as paperback and they are in fact MMP. 

So I gather when it says "mass market paperback" it is a MMP, but if it says "paperback" it could be either.  Is there a way to tell the difference when ordering if it just says "paperback"? (hope that wasn't confusing)

Some books have different ISBNs for the trade versions, but some do not.  You can check the ISBN on Amazon and check the dimensions that are listed.  Also check the other versions that Amazon lists for the book title to make sure that the same ISBN is not used for more than one version.

Like Lesley, I check Amazon book info if I need dimensions or weight.  If there's another method, I'm clueless...which is entirely possible

What's the difference between MMP & trade size?

Debbie- a mass market paperback (MMP) has smaller dimensions, typically costs $7.99 or less to buy, usually has smaller print, and is generally made to a lesser quality. Some benefits of this version is that they're easier to carry with you, can be much easier to hold up while reading, and are easier to store due to their smaller size. They're also lighter and therefore less expensive and easier to mail.

Trade size paperbacks are basically the same size as a hardcover, but in paperback form. They have a suggested price of around $14, but are usually bought for less. They typically have slightly larger print, are sturdier, and last longer. They're also a bit bigger, harder to travel with, and take up more space. While heavier to hold, they do tend to basically lay open when read layed down (like hardcovers). So, depending on many factors, people have different preferences, and some don't care at all.

If you look at a bookshelf, you can tell the difference immediately by 1) the size and 2) the price listed on the book. If you get used to the difference, before long you'll be able to tell which is which with just a glance.

Thanks Tiffany.