The old thread was "pricing asphalt driveway". I copied one of my replies, was too lazy to retype the whole thing....
There are a Lot of options
A: dirt; cheap to free; can be fine for many people/conditions/soil types; sometimes a dirt or sand drive can seem fine, until a heavy vehicke breaks though; can always be improved later; on a slope, erosion can get Very bad fast; its entirely depended on your local soils/slopes/drainage; DIY friendly with tractor/skid steer; or nothing ar all
B: wood chips on dirt; cheap to free; works well many times But it will need removed if improved; can attract termites; can float in heavy water; can wash; Need to have a free source, like a power ROW clearing contractor; not easy to grade;
C: improv stabalized; carpet/conveyer belts/ect; can actually work very well; look ghetto as heck, really need to be removed if you make improvements
D: sand-clay/ball field clay; cheap (if locally available); doesn't wash too bad; can be added to with more clay/rock/ect; can actually be paved over; gets slimy in rain; stains vehicles/clothes/tracks into house; if you get it delivered, you can easily spread/grade with tractor/skid steer/mini hoe
E: gravel/roadbase; can get pricey with trucking, but if close locally, it's pretty cheap; properly installed will last a long time, can be added too/redressed/regraded/paved over; some roadbase (limerock) will wash pretty bad; washed graded gravel doesn't really bond into a homogenous base; even if you add a few loads of rock every 5 years, it's still probably far cheaper than asphalt or concrete; if delivered can easily be spread/shaped with tractor/skid steer/whatever
F: crushed concrete; very good material; can be priced near roadbase depending on trucking; very dusty; water doesn't hurt it, unless it's high volume/high velocity; can be added too/paved over; often has some wire, and can lead to flat tires; easily spread and shaped intialy; can be hard to regrade later
G: RAP/millings; getting very expensive, ($900/load locally, and that's off the roadway); pretty much only available near a milling job or an asphalt plant; water doesn't really affect it much; less dusty than crushed concrete; can be paved over; don't believe it's a magical material; it doesn't turn back to asphalt in the summer
H: chip seal over one of the base materials; cheaper than asphalt; protects the base from water; eliminates dust; pretty good traction; it's very thin, and won't last as long as asphalt; don't see. to be many contractors still doing it; requires a tack truck or atlwast a tack wagon, and a rock spreader, and traffic roller; Not DIY friendly; can be paved over in the future; can be re chip sealed.
I: asphalt; cheaper than concrete /pavers; dust free, not affect by rain/minor run off water; you do need to patch and crack seal as needed; can be milled or overlayed; fairly easy to cut or demo if needed; not DIY friendly, however, you really can Pave a small area with a dump trailer, box blade, and a plate tamp; in 90% of cases asphalt will be laid on top of another base material; but full depth asphalt, using asphalt as a base is also done in areas where time or water are critical issues; that gets extremely expensive when you start talking about 6-9" of asphalt.
J: concrete; if done correctly, with good subgrade it should outlast you, but is very expensive; poorly done concrete costs just as much, but will be a mess as quick as anything else; unaffected by petroleum/most chemicals; unaffected by water; cutting/demo very expensive; can Not be overlayed; can be very good looking; needs cure time after pour. Pretty DIY friendly, and can be done in sections/phases; many contractors; concrete plants deliver on ready mix trucks; can be pumped in some pretty bad terrian; can be groved to improve traction on slopes;
Few odd ball options;
Soil cement; has to be the right native soils (sandy, low organics); can be paved over; water doesn't break this base down; if soils are right, you are only importing the Portland cement to mix in; can't really be regraded after it cures; can reflect cracks though asphalt
Geostabalized grids; pretty costly, has to be paired with an aggregate base; can help bridge bad subgrade, but eventually the subgrade will rear its ugly head; don't know if it needs removed or top coated with additional base to Pave over?
Pavers; probably the most expensive, and to do properly for long life, they need to be on a good base; often grow mold/slime; will settle individually; can often remove a few broken ones to repair or remove and replace to trench under the drive; can also be mortared in