The most common lucrative brands are Miele, Dyson, Electrolux, Rainbow, Shark and Kenmore. Others are ok, but I often pass on them/just take a part of two to save on space. There is a lot of money in the power hoses, power nozzles, power wands, canisters, cord winders, and motors, if you break them up.

It can't hurt to try. You just need to scout to find the right vein of potential curb recycling where this is possible. Some areas simply don't have the volume like here, but if you're aware and looking, then you can snipe accordingly.