While holsters are not as prevalent for the Steyr as they are for say Glocks, they are
readily available. Blade Tech, Crown, Raven, Falco, Concealed Carry Concepts, etc. all make holsters for Steyr (as well as many other kydex and leather holster makers). You can also buy a nicely made Crossbreed IWB, a CB clone IWB holster on eBay or a Cleveland IWB holster on the Steyr Arms website. Brownells and Midway USA carry full capacity mags for around $30 each. Brownells still has mags in stock.
The newest generation of Steyr pistols (as can be determined by the American rail and a roll pin under the rear sight) are excellent guns. Probably the single most under valued and under appreciated polymer framed guns made today. The trigger is smooth and short with a VERY shot reset. I personally think it is on par with the Walther PPQ or Apex upgraded M&P. My trigger scale average a best of 3 pulls at 4.9 lbs. Recoil is light, muzzle flip is nothing compared to other guns and the ergos are awesome. Accuracy is right on par with most modern wonder 9's. Individual ability being the key factor to accuracy. I have a C9-A1 and love it. As soon as Steyr imports than new L9-A1 long slide I will have one of them too.