then you didn't read the datasheet for the original timer that was $150 because it also uses relay and the datasheet clearly states that it is rated for 10^5 operations. note 10^5=100,000 which is the same life as for Omron.
in the original post
the only issue with that one was the
high cost so I offered an alternative that is more common and nearly 4x lower cost.
btw 100,000 of operations is common for relays, they all have life expectancy of this order of magnitude. but... this is guaranteed life, not actual life. it tells how many operations relay can do while interrupting rated current (8A for example).
this is what wears down relays the most. mechanical switching is much less significant factor and at lesser loads relay will easily do 10x more cycles.
i work in the industry and see bunch of stacklights (beacons) with 24v 10W incadescant bulbs flashing once every second or so. and that is on equipment that is never powered down - and the relays still tend to work for many years (because 0.5A is much less than rated 5A or 8A...).
now IF your process is so sensitive, why put your trust into one timer? there is something called redundancy.
also you can add monitoring and indicate if one of them is not working. the question is how much you want to spend?
one thing you can do is use so called smart relays (you can use them as timer or simple programmable controller). then you can use more than one output and (using your programming skill) you can alternate them so each of the outputs does only fraction of all cycles. using built in inputs you can also monitor each output and automatically skip the bad one and use only the healthy ones.
so how much you want to complicate...?