

Tamara Rubin is a grifter with no expertise who bought an XRF gun to use to scan random objects as fodder for her blog where she gets money from affiliate links. Her wikipedia page talks about a few of her financial crimes. I wouldn’t worry anything she puts out.
To elaborate on the price, those pods have ~11g of coffee in them (according to the first link I clicked on). For a (north american) standard size cup of coffee (350 ml), I use about double that. You can either chose to have a much smaller coffee, or a regular size coffee that tastes bad.
For the same price per gram of grocery store brand pods, you can get really good freshly roasted, single origin, free trade, etc. beans.