Companies such as Bosch, Trico, and Valeo are most likely using a much higher quality natural rubber compound for their wiper inserts than sellers on eBay and Amazon selling lower cost generic alternatives. The domestic OEMs are typically sourcing from companies like Trico, Valeo, and Anco as well.
I have found that Toyota OEM inserts last for years and have heard the same about Honda OEM inserts...not sure if they manufacturer them in-house or outsource them, but they do a good job with them.
I have found that Toyota OEM inserts last for years and have heard the same about Honda OEM inserts...not sure if they manufacturer them in-house or outsource them, but they do a good job with them.