UAV-230 has about the same specifications as TRG-230, but has more than twice the range, 150+ km to TRG's 70 km. I believe same thing happened when Roketsan tested UAV-122 as well. So, TRG-300 when launched from an F-16, which flies higher and faster than an Akıncı, it should easily surpass 200+ kms of range.
These artillery rocket turned missiles would naturally be more expensive than, for example, a MK83 + a guidance kit, but, in comparison to a cruise missile they would be far more economical. We already produce and use lots of MK series bombs with guidance kits and recently got Tolun. With these new ones, we'll be filling an empty position between guided bombs and cruise missiles, they have great range, supersonic and relatively cheap so they are a great option to have.