Replying to Final Cut Pro 7

alright so i know not many people are familiar with final cut pro, but there are definitely quite a few considering i have seen a bunch of edits that have clearly been done with final cut. So if you know i'd like to find out how i can get the update to 7 for free, because to buy the damn thing its like 400 bucks or more. So if someone has a site or torrent that would be great cause my program is starting to slow down, and its getting hard to edit. If you have it are there any big advantages to upgrading? just wondering thanks.