When I initially purchased the GoRuck Rucker 4.0, I was mindful of the cost, particularly regarding the weight plates. While the GoRuck brand plates are likely outstanding in quality and fit, their high price was a concern. I located some alternative plates on Amazon (https://amzn.to/3sZcXBF) and hoped for the best. These plates are half the price of the GoRuck ones and are fully compatible with the Rucker 4.0, allowing for three 10-lb weights to be fitted in the single/upper plate holder. This makes them an excellent option for those seeking quality and affordability.