Oh so I can pay 2x and get something 2x faster. Wow. And I could pay 2x of $60 and get a whole chromebook or used laptop that was 8x faster. Or a I could buy a cheap android phone and have my rockchip with a touch screen and battery for that $60.
they just don't understand the price point logic of $35.
Likewise going the other way you can buy a cheaper and more powerful board like a Pine or an Orange PI, save yourself $10 in parts and then pay about $300 in time and effort (assuming your time is worth $50/hour) to get a linux distro and and all the needed packages that actually works on it. the orange PI's are junk because a usabale software set only gets ported a year or more after the board has been on the market. I bought one once, and had to download several different distro's for it till I got one with drivers that would support the Key board, Blue tooth, and screen I was using. And even then it was only using just 1 of it's 4 processors and no graphics acceleration from the Mali chip. that took hours to wade through. then when I tried to install other code the libraries didn't compile. Fast forward 3 years, and it works fine now but the rasperry PI 3 eclipsed it.
The whole point of the RPI is a bomb proof little circuit that has loads of well testd software so it's not the project, it's the thing you put into the project.