How to choose Household items and where to buy them, online or at physical outlet

Hi, I've seen the article on the expiry dates of household and is considering to change some of my household items, e.g. pillows, however with the many options out there, it's hard to pick the right, and with Covid 19 now, ppl tend to buy online. So, for someone who tend to buy pillows at departmental store to test the firmness and quality, should I take a risk at buying online, considering that I partial knowledge on buying a suitable pillow for me. And what other items should I get online?