Some perspective on this
Yes, the engines were "refurbished".
But, consider that:
- They were designed and built in the 1960's, for the failed lunar mission by the Soviet Union (the only flights of which spectacularly exploded)
- They were refurbished and renamed by a Ukrainian company in the 1990's
- Orbital bought some of the limited supply of them, because they had no engines or rockets of their own.
- Orbital outsourced all other aspects of their efforts. They were at best a systems integrator.
When you put these facts together with Orbital's lack of experience in rockets, you have to wonder why NASA awarded them a contract in the first place.