Amount of coffee in French press vs. K-Cups Last night I was at a restaurant with friends and we were discussing coffee. So I shared that I typically use a French press with around 25g for a "real" cup (~400 mL). Everyone was suprised at how much coffee that is. Yet pretty much every website I've seen about French press recommends something around these lines, or more. Also - and more importantly - I've tried lowering the amount and it does taste thin.

YET... I do enjoy for instance K-cup coffee, which is around 10g/cup. Does it mean the French press is not economical at all?
Consider trying an AeroPress coffee maker. It's kind of a redesigned French Press. It's quick, makes smooth coffee, and is easy to clean.
If you put in one heaping (rounded) scoop of coffee, that's 14 grams or 3 tablespoons, according to their FAQ.
While you're on the FAQ page, it answers interesting questions like about gentler coffee:

... about one-fifth the acidity of drip brewed coffee and one-ninth the acidity of French press brewed coffee. Because of this it’s easier on your stomach.

They have a web page comparing AeroPress with French Press and other kinds of coffee makers:

French presses use coarsely ground coffee because of the size of the holes in their filters. The coarsely ground coffee particles have less surface area than finely ground coffee. The lower surface area necessitates a long steeping time to extract full coffee flavor. Unfortunately, this results in bitterness and acidity in the cup. The AeroPress uses espresso or fine-drip grind coffee with a big surface area to quickly extract rich, full flavor without bitterness.
The coarsely ground coffee required by French press filters unfortunately includes some small particles which pass through the filter and into your cup. These particles continue to leach bitterness leading to a harsh, gritty brew. AeroPress brewed coffee is micro filtered so it is pure and particle free.
French presses cannot produce espresso style coffee and therefore the drinks that can be made with it. The AeroPress can produce regular American style coffee or an espresso style concentrate which can be used like espresso in espresso based drinks such as lattes and cappuccinos.
All ground coffee contains the molecules cafestol and kahweol, two molecules which raise LDL (“bad”) cholesterol. The metal filters in French presses do not filter out cafestol and kahweol. The AeroPress’s paper filters do remove them, meaning that AeroPress brewed coffee is free of these harmful elements.
French presses are notoriously difficult to clean. The AeroPress is essentially self cleaning, requiring only a quick rinse.

BTW, if you use a Baratza grinder, see this page for their recommended grind sizes. (The page also has a link to different brewing recipes, but to be honest, I'm happy with the standard recipe.)