You probably already know this, but a company called Harbor Freight Tools is a mail order company with retail outlets in many major cities sells a complete 3/4 inch metric set which includes ratchet, breakover, and a couple of extensions plus a full set of LARGE sockets. I bought mine when it was on sale for $39.95. I also bought the same socket in SAE for the same price. I also spent $40 for three sockets before I found out about this. Now I bought a set of large 3/4 inch impact sockets. Tractor supply seems to sell about the same type of tools priced only slightly higher. They also have the 3/4 inch impact wrench that I need.
The reason I need the impact wrench is that I usually have to have a 4 ft cheater bar on the large 3/4 inch drive breakovers to get the bolts to loosen. Unfortunately I do not have a good torque wrench for the large sizes. Just have to settle for very tight for now. /w3tcompact/icons/smile.gif/w3tcompact/icons/smile.gif