I don't think I'm interested in buying an NOS carb assy. The price is too high for me.wouldn't the question be where can we get a new carb if the float and needle are not available? I may be seeing something that you didn't say, I don't know. I saw some with that part number on ebay today when I looked it up. Recently I had to replace an old carb on a pressure washer that was 20+ years old, and the NOS one I got there was from a guy with 100% rating and some 10,000 sales. It worked out perfect but it is a different old stock carb than yours.
I recognize that the 681639 float is available on ebay, but it is the 681208 that is indicated in the parts diagram for the model 7265. This is why I asked if they are interchangeable.