hi,
these poles you see on ebay are made by company called stream WFPs, their price buy it now is about 450 ish. What i said is true, though they are not that bad. If you look at their complete weight its quite heavy, close to what a 60ft CF pole would be. If you needed one just for odd jobs this would be ok, though i did not enjoy using it. They are fine once they are vertical, though if you wanted to use it fully extended i would think it would bend so much that the brush would not leave the ground. the clamps are glorified jubilee clips fixed to the pole, with slits in the aluminium to make it clampable, the downside also is that the sections swivel within each other so if you dont tighten enough they can move about, and take a few turns to do anything. They brushes are good quality with strong gooseneck, i only used mine for large conservatory roofs, and a few second story (thats ground 1st and second) but getting it to the height was not fun. Im not sure how you normally extend a long pole, maybe i was doing it wrong. These poles do not feel too heavy once vertical but i struggled to lift it, bending quite allot.
Not bad for a odd job cheap pole, not good for regular high work. I sometimes would take thickest bottom sections off, using it as a 25, 30 foot ish pole, not so bad then.
I would get a fairly decent CF one if i were you, but you could make do with one of these.