I have been looking around ebay for hand planes specifically stanley number 5. I know what it means by number. A number 4 is a smoothing plane, number 5 is a do it all bench plane, a number 6 is bigger than a number 5 ect. But what does it mean if the plane is a number 5 type 16? other ones I see are number 4 1/2 type 5, number 5 type 11. What does type mean? Also is it worth it to buy a plane on ebay? most of them cost $25-$50 plus $10-$20 in shipping and you have to go through the work of restoring them. Or I could go on rockler and get a stanley number 5 for $75 with free shipping that I don't have to take the time to restore.