From the eponymous company line of products. Saying "Sharper Image" before an item automatically makes it high-end. Usually, it denotes a high-cost but low-value product that, while appeling to rich folk, those who think they're rich, or those who want to live the high-life, was nevertheless manufactured in China like every other product common people buy.
Since the company filed for bankruptcy, the Sharper Image brand has significantly lost appeal, and is now-a-days synonymous with wasting money on over-priced goods.
"I got these Trump Steaks off Sharper Image, they cost me $100 a pound so they must be delicious."
"Fully endorsed by Donald Trump.... Nice! We're gonna make a great impression at the Young Republicans meeting."