Don't buy stuff that wears out secondhand, as the price differential reflects the reduction in useful life. This is drivetrain parts mostly.
When a company produces a durable item, 4% of which always fail in the first year due to an undetectable manufacturing defect, then buy secondhand. e.g. I think there was a badly brazed batch of Mexican Benotto frames at one point - but they've all fallen apart, so one you buy secondhand is fine.
Don't buy stuff that wears out secondhand, as the price differential reflects the reduction in useful life. This is drivetrain parts mostly.
When a company produces a durable item, 4% of which always fail in the first year due to an undetectable manufacturing defect, then buy secondhand. e.g. I think there was a badly brazed batch of Mexican Benotto frames at one point - but they've all fallen apart, so one you buy secondhand is fine.