The most established PLR membership is IDPLR. They’ve been around since 2008, and have delivered quality PLR products since then.
IDPLR has a current (almost 50% off) discount deal. I highly recommend the lifetime membership for a 1 time fee and never pay again for PLR products!
Theis IDPLR discount is currently still available but can end at anytime! If you’ll lucky enough to still see this discount at IDPLR, GRAB IT!
IDPLR also offers a free membership with limited access to 500+ PLR products. These are quite older products but can get you started!