In the grand scheme of things. When you spend hundreds to thousands of dollars on weapons, it's not worth trying to save a couple bucks when it comes to commercially transporting them.
Not trying to compete @Lonewolf McQuade, cause he can work some magic with a hard case. But this is how I transported my stuff the last time I ventured out to Arizona.
All stacked and ready.........................
Interior details.
4 rifles, 3 optics, 8 mags, 4 suppressors and a sidearm w/spare mags.
Side note. The look on the TSA guy's face was hilarious.