Pella windows aren’t overpriced so much as premium priced. You’re paying for a well known brand, wide style options, solid warranty coverage, and dealer installation support, which pushes cost above budget or mid range competitors like Simonton or American Craftsman.
Compared to true luxury brands like Marvin or Andersen’s top lines, Pella often lands in the middle, so “overpriced” depends on what you’re comparing it to.
Whether it’s worth it comes down to your priorities.
If you want a known name, consistent quality control, and easier warranty service, the price reflects real value. If you just need functional double hung or single hung replacement windows and don’t care about brand, you can likely find comparable performance for less elsewhere.