Similar to what Walter did, I have commissioned “sound-alikes” many times. It is much cheaper than the real thing, but you still walk a fine line of infringement. I have heard that if it makes you think right away of the original then you have crossed the line.
To answer your question, I have never seen a place that has versions of the originals you don’t have to pay big bucks to use.
One of my favorite libraries is Fresh Music, who I think BTW are about to fold, so there may be some bargains there.
Have a wonderful day.