I called window company, but they refused to give me any quote over the phone (even though I just wanted one on a single window to give me an idea of price difference between different configurations). They said they would get back to me next week with a quote..
For clarity for others who may be watching...
- Our price for supplying the complete double glazed products was: -
Stacker door 2.1m x 5.3m = $2420.00
Awning 1.2m x 1.8m = $476.00 ( 2 = $952)
Total = $3,372. (Single glazed around $2,500)
- Tompab's upgrade price (Just adding another sheet of glass)
Stacker door 2.1m x 5.3m = $3,608.00
Awning 1.2m x 1.8m = $377.00 ( 2 = $754)
Total = $4,361.00
And that is $1,000 (almost 30%) more than the complete product from EcoClassic, and it is only to add an extra sheet of glass.
Shop around.
Ed