... is there something comparable to ProTools that is not as expensive?
No...if for no other reason than certain standards exist in the professional world.
There are other tools that may perform as well as, or perhaps even better than, Pro Tools does. But that's not the important criteria.
Poke around on this or any of the other "recording" boards; see how many times you read, "I started out with (insert name of another DAW here), but I switched to Pro Tools because that's what clients expect."
No matter what DAW you choose you will face a steep learning curve. Sure, you might can lay down a couple of tracks without cracking the manual (and you can do that with Pro Tools, too), but to really use any DAW you have to spend a lot of time learning how to use it and experimenting with it to learn the "in's and out's".
If you are absolutely sure that you will never ever be a professional in the music business, go ahead and use another DAW.
But if you have even the slightest dream of being a pro in the music biz, you might as well go ahead and learn Pro Tools now. Because you will have to learn it someday. So why waste your time learning something you'll just have to turn around and un-learn later?