The infill lattice is visible where the tab has come off. Iinfill must be increased to 100% to maximise strength. Going through the testing phase is further evidence of the benefits of iterative design.

Is It Economically Feasible To Print A Replacement?

Ultimately the answer to this kind of question is highly subjective - you have to decide whether your time is worth it. For me, this is a hobby and something I enjoy, so i'm happy to dedicate the time. With the experience gained from continued practice, this process also become increasingly easier which is something worth considering.

Based on the final part print settings below, I am able to calculate the material cost of this exercise.