Help me find durable men's jeans that last more than one year

I have bought jeans from various online stores for $40 to $60 that developed holes in the knees after 8 months. I have searched on Alibaba, eBay, and Amazon for more durable options. I am considering ordering samples which will cost $30 to $45 but the minimum order is often 20 pieces. I only need 3 to 5 pairs for myself. I want jeans that hold up to weekly wear and washing.

I am trying to find a source for durable men's jeans at a reasonable price:

• What brand of jeans under $60 has the longest lasting denim according to your experience?

• Are there any overseas suppliers willing to sell sample quantities of 5 pairs instead of 20?

• Is buying used jeans from resale sites a better value than buying new cheap jeans online?

I want to stop replacing my jeans every year but still spend what I can afford.