I just start renovation for my flat recently, no previous experience before. 
I want my ID to get Superme laminate (AC5) for me, and he quotes me 4.8 psf. I call Superme directly, and got 4.5 psf. I know Superme has life time warranty, but not sure if it is available if I let my ID to handle the installation work.... 
I try to be fair to my ID since I think he is nice guy, but is it normal that ID will get higher quotation from Superme than owner? (when I called in, Superme did identify I am contractor or owner). 
Hi, Anyone have experince to handle such issue nicely? personally I prefer to give my ID for installation, he can earn the part for sure,  but i want to make sure he get the best material cost for me. 
Any suggestion is welcome! Thanks