I have used PiX4D, Correlator 3D, Bently, Propeller, Datumate, Maps Made Easy, and Precision Mapper.
All seem to be in the range of 300 a month except Precision Mapper is free for 5 maps per month. All, except Maps Made Easy and Precision Mapper are located on your computer. Precision Mapper does have an option to have it located on your computer or not. I use ground control points with an Inspire2 with x5s camera 15mm.
I'm down to Datumate for ease of use and Precision Mapper for ease of use plus no fee for 5 maps per month and cloud processing and it's fast too(3 hours including image input, GCP input, GCP locations on photos and cloud processing for a 310 photo job 80/80 overlap). I learned later that 70/70 overlap is OK with Precision Mapper if not doing wooded or ag sites.
When I can afford it or when work picks up I will be using Datumate. Until then its Precision Mapper. IMHO