One other option might be this...
Go to the Project Gutenburg website.
You can download stories legally and for free.
There are no longer copyrights or royalties for those books.
You could print, say, just 5 or 6 copies for each class.
Those 5 or 6 students get page 1 one day 1.
They pass that to another student on day 2 and then they get page 2.
They pass page 2 on to another student on Day 3, and so on and so on...
Of course there will be a small (staggered) period when some students have read the whole (short) story and some are still readig the last few pages.
Apart from people simply sending books to you, I cannot think of a better way of doing this with little money.
Have a nice day :)