When our "new" driveway went in, they cut it down to subsoil, laid in geo-textile and then put in several layers of modified stone, compacting each. The only area that got some heavier rock was the last 8' to the road which was a bit more "regulated" relative to construction requirements including requiring 4" of asphalt paving for that 8' as what I'll term a "landing pad". (I'm actually very appreciative of that paving when a rare snowstorm dumps on us as it makes clearing that area at the road much easier) If your driveway is cut in clean enough, you don't really need a boarder for a rural driveway...the un-touched soil should hold it fairly well. Borders are more of an aesthetic in most cases, although in certain areas with certain kinds of soils, they may be more practical. IMHO...which may not match reality.
Personally, if I happen to win the PowerBall, the driveway will get paved quickly to cut down on dirt and make snow removal much easier.
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The most expensive tool is the one you buy "cheaply" and often...