I'm not sure where the "thousands of dollars" notion comes from.
Perhaps you could point me to one that does not. I'd be more than willing to check into any options you are familiar with. I would prefer not to go with a guided group charging thousands of dollars, but after some more searching, I did find one local company which will do the climb for $1795, which is pretty reasonable, considering the technical difficulties of the climb. Most other sources quote a price a lot higher than that (there are actually few local companies that actually climb to the summit of Mt Kenya). Some of them want more than $7,000! I'd rather use a local guide/company anyway, when available.
So climb on your own, with one porter.
Yes, I was planning on hiring a porter to help carry ropes and technical gear to the base of the mountain. Perhaps he/she could also keep an eye on our gear and camp items while we were out on a climb.
I'm not sure if you are familiar with the climb or not, but most porters do not have the skills to climb Mount Kenya. It is a technical climb that requires 20 or more pitches on technical rock.
As far as climbing on my own, I'm not badass enough to climb solo up a 20 pitch high grade rock climb. I wouldn't want to subject a non-experienced porter to such dangers either. Although I was hoping to find a partner, I'd be willing to hire an experienced rock climber local guide.
PS, I agree with you about hiring porters and contributing to the local economy. I've always done so for climbs in Africa, Himalaya, and sometimes in the Andes.