I got this* 2000W Ozito with full variable temp control from Bunnings yesterday for $35.* It was the first time for me with a variable temp heat gun. Roast came out quite well. It did not have a scale, so I used some liquid paper to create one. Works well enough.
It is still early days, but it does have a 3 year replacement warranty, and I was able to do 2 back to back roasts with this. My old gun needed a long cool down time. The reason I went for this was that I figured worst case, I can point the gun away, and turn the heat down all the way between roasts to overcome the waiting time to let the gun cool down.