Shatner has always done commercials, even back in the old days when it was the “kiss of death” for one’s acting career.
I read where the story about him becoming super rich from the Priceline deal may have been overestimated.
He did very well, in the early days he was doing those commercials they paid him in stock. He did just fine.
One year for Halloween my girlfriend dressed up as Naomi Price, another friend of ours did a REALLY good Big Deal, and I was Shatner. We posted the pic on Twitter and later that night Shatner retweeted it. That was pretty fun :-)