Honestly, it's hard to justify the price point. Especially since there are myriad of mods with similar form factor/ performance coming out lately at around or less than half the price of mini. In all reality, mini is a luxury.
I think the mini is placed squarely in the class of dna 40 devices like the vaporshark rDNA, and the Provari P3. Devices in this class range from around $190 - $290 USD. The mini is on the low end of the price range, and on the high end in terms of quality and functionality. If you are spending this much on a device I think it's quite easy to justify. If you don't want to spend a lot on mods then there are plenty of lower cost options. But there are definitely trade offs with the more cost effective mods. Watch Phil Busardo's videos on the ipv mini and the sx mini. Both are legit devices for daily use, but there's a reason Phil's lovin on the sx mini. At the end of the day there's a better board in there and the design is more thoughtful - and yes - more sexy.