Ruger is just selling their mags for MSRP. you can easily get them cheaper elsewhere.
CDNN Investments has the 30s for $30 and the 20's for $25.
Yea yea, they are more expensive than AR mags. Complaining about Mini mags being more expensive than AR mags is like complaining about veal being more expensive than ground beef. You only have to buy a factory Ruger mag once. I have a 25-year old factory 30 rounder that continues to work fine with only basic rust protection. How many regularly used AR mags have seen their 10th birthday without a facelift or two?