I purchased logic several years ago but my disks were destroyed along with the manuals. I'm hoping that I can get a discount on a newer version.

That must have been at least eight years ago. By then, Logic cost 499.-, just for reference. Now, choose your answer wisely:

a) No, you can't get a discount, the price is 199.- for the full version of Logic Pro X

b) Yes, you can get a discount, the price is 199.- for the upgrade from Logic 9 to the full version of Logic Pro X

Which version do you have? Logic Pro X was released on July 16, 2013.