I just saw your post, and I can't help but wonder: I get the frustration with shower door seals. They can be so painful when they start leaking or look worn out. I remember when I had to replace mine; it felt like a never-ending project. But trust me, it's worth the effort.
First, measure the old seal before you shop for a new one. There are many options, and getting the right size is vital. I found some excellent deals online, like at
nvh, which offers a variety of seals that can fit your shower perfectly.
Installing them isn’t too tricky, either. Clean the area, peel off the old one, and stick the new seal on. Give it a little time to settle, and you’ll be ready.