Just bought one about a month ago from Rapid Electronics (seven quid or thereabouts; I was buying other stuff anyway). Great little device, in my limited experience of it.
My missus has been craving for some decent "patio furniture" and she has spotted some stuff in Safeway (now "Morrisons"). At £150 for five pieces of furniture my presumption is that it would be stick-thin pine that would last one winter. A few days ago (once they managed to pump put the store... just kidding) Safeway decided that summer was over hence the furniture came down to £99 which brought it into my radar as "probably worth the money now even if it lasts two years".
The "pine" presumption was wrong as the furniture claims to be Malaysian hardwood such as "Meranti", "Durian" and "Membatu" (any folks more conversant in these types of wood please comment).
I've spent a few hours assembling the furniture (well, using glue in addition to the supplied screws) but most of this time was in using Teak Oil to protect the wood. Having left it to dry overnight, I've cut some rectangles of damp-proof-course plastic to act as feet for the furniture, and the glue gun is brilliant at sticking this plastic. Previously I had used staples to nail the plastic to the feet, but this provides a path for dampness to travel. The glueing is great to avoid that.
So that's my tip for the glue gun - use it to stop water being drawn up the feet of any outdoor wooden furniture.
Mungo