Dear Khun Soraya,
Thanks for providing a discount even without asking me….
You need to check the following for me, because I think you made a mistake.
1. If I add up the total amount material and labour, I come to a figure of THB 12’809’850. What is confusing in your cost summary are lines L and N. You write “Option” under “Remark”, but add it to the total. We definitely need “N”, the work area protection, but I do not think we need “L”, because we need to get design approved at our end. Keep “L” as an option, but do not add to total amount. This is not a mistake, it is just make sure, what we need and what numbers we look at.
2. Now to your mistake or discount….
If I add up all your numbers, including L and N, then I come also to THB 12’809’850.
But 15% from THB 12’809’850 are THB 1’921’478 and definitely not THB 733’898. This is only 5.7%...if you are happy with that, I take it!!!!!!!!!
3. Here your percent calculation is correct, but the numbers not, considering my point 2.
Please correct your numbers and send me a revised offer, to avoid later any confusion, please issue as Revision R1.