Hmm, necessity is the mother of invention. Just thought of this. I do have a hydraulic cart, it has a 36" x 21" table. Think it is a 1000 lb capacity. I still need to bridge the gap between the stairs and the porch. I'd lower the cart for transport and raise it for the stairs. Could use some 2x10's to bridge the gap? I have two left over pieces that are about 6ft long. The piece I'd roll along is 350 lbs + the weight of the pallet. The whole pallet is more, but I could unload it after I removed it from the vehicle and move pieces separately. I could use a comealong to pull the pallet out of the car. Maybe I could use a 2x10 (or bigger?) across the house doorway to pull the pallet off the cart. This could work. Advantage, it's free. The cart table size is not a huge mismatch to the pallet. Obviously I will put the heavy side on the table.
Ok - that's my idea. What do I have to watch out for to prevent injuring myself or my cargo? Cargo is a small lathe, a 10x22, which might not be big for you, but it's at about my limit for getting into my old basement.
Getting it down the narrow stairwell will be exciting, especially rounding the corner at the bottom of the stairwell. The hydraulic cart weighs about 185 lbs. Debating with myself if I should bring the cart down first. Probably make a sled ramp to make things easier.