I bought 2 of these in tenkeyless (for work and home) and both are still in great shape. I did switch to Kinesis at work about a year later but is 9-10 years of daily use and they all look almost identical to when new.

Finding a keyboard you like is expensive but once you do they pretty much last forever. At work the Kinesis has outlasted 5 MacBooks and serval PCs. It is by far the cheapest computer peripheral when time of use is considered.