That seller is very good and where I bought them from since he's semi-local (although the wheels just drop ship from a warehouse). Don't hestitate to buy them there.
The others are right, if you are heavy or powerful the rear wheel has lots of flex, and the front wheel too much windup. The rear wheel flex is felt under hard climbing or sprinting. I'm working on trying increased spoke tensions to help this. They are however solid and stay true and round. They are light and move forward through the air well. The claimed weight is spot on and mine came in a few grams under. As VT to CA said, at his 150 pounds they are probably excellent wheels for the money. So it depends on your weight and strength.