O-ring = not easy to replace? Sounds like someone previously had really beaten it down...
You're a good employer yeggous....I'd split your woodpile for $20/hr, not a problem8).
The splitter's owner picked up a new O-ring but it didn't properly seal. I'm not sure what went wrong, but he's looking for a whole new assembly for the hydraulic switch.
Minimum wage is about to go to $11 / hour in a few months. Given the amount of work involved, I think $20 / hour is totally fair. Hauling, splitting, and stacking wood all day deserves more than standing beside a cash register in an air conditioned store. Plus I want to make sure that I'm paying enough to get someone to actually care to do the job right.
I work for an employer who compensates and treats the employees well. I can see the difference in the commitment of the workforce here vs in my previous company. I want to foster that same environment.