A quality tool is often more economical to fix than buying a new one. If the blade is solid, I say fix it.
I have an ergonomic snow shovel which I love that is about 10-15 years old. The scoop is heavy plastic with a steel blade. When the rivets holding the blade wore down causing it to come off, I just re-riveted it back on and I was back in business.
I also have a post hole digger, square and round shovels. If I use any of them during the season, they get cleaned and painted with Rust-Oleum prior to being put away.