Couple things to think about with costs.
Do you want wood(post) frame and trusses.
Do you want metal framework and metal trusses.
I know/have relation of mine and helped build a wooden framework on one, so I've seen both types.
The all metal garage, the builders used welded trusses/sidewall framework which eliminated most(if not all) of the weakness that one can have with wooden nailed frameworks. Also, no twisting/warping/bending of wooden posts, whereas the all metal framework will stay true and straight throughout the build.
The metal framework does need anchored down just like the wooden posts are sunk into the ground(cemented in at least 4 feet deep), but the metal feet of framework are bolted the flooring, so talking with an expert of this type of building will need hashed out when the pouring of concrete is done, since more strength is needed in this area.
I can tell you from knowledge, that Missouri having termites/wood ants and other wood insects that over time the all-metal framework, even though cost a bit more will outlast any wooden framework. Even though one uses treated posts and other treated woods, over time one needs to retreat that wood as the treatment does evaporate, and loses its effectiveness and doesn't last till the end of time as one thinks.