As I have posted many times here, when buying a gun in a "new caliber" or at least one not in the "main stream", be prepared to accept what is available and what prices they are currently asking - basically get ready to be abused. While reloading can sometimes be done on the cheap, that is ONLY if you have the components on hand and purchased when they were somewhat reasonable like below $30 bucks a brick of primers and below $15 bucks a pound of powder.
Unless a "new caliber" changes the way we live or can control the weather, there are a plethora of calibers on the market for decades that are readily available at somewhat reasonable prices and you actually can choose the spec's you are looking for. Between 9mm for a semi auto and .38 spl for a revolver there will be ammo available for a long long time. .32 H&R, 10mm, 38 Super, 21 Winchester, .357 Max, etc. good luck. While on a piece of paper sometimes a new caliber can be attractive, but again unless it is life changing we must ask ourselves before the purchase - will it revolutionize my EDC life?