The ramps arrived packed in a crate about 8 foot long. Too heavy for me to move but once opened I could manhandle the individual bits. Put it together single handed so it is possible but would be a lot easier with two people.
The ramps are well designed and plenty strong enough to be safe. You need a good garage floor for them to be stable and for it to be easy to crawl around under the car. Good access for oil changes, exhaust work etc. They met my expectations. In terms of price they are not a bargain but fair enough. I am sure that overseas manufacturers could make copies at sub 1000 pounds.