I just had mine done. Don't know the dimensions, 50x20 maybe? Cost me about $3500. It was the dee-lux job for a couple hundred extra.
Watch out for crooks. The paving biz is full of them. If a guy shows up at your door with a truckload of "leftover" tar (or whatever it's called), tell him to get lost.
I doubt you live in Southern NH, but if you do, I highly recommend Hudson Paving.