Said the man with nickname BiTSiK  The rigs looks great of course but the price is too high. GTX1080Ti with referense design costs about 650euro (at retail) MoBo + CPU + SSD + RAM - about 150euro max, PSU of 2kW here not exceed 300 euro (also at retail) frame cost is about 100 euro. So the sum is about 4500euro is the price for end buyer. You as the computer shop of course has a distributor's discount, So your price of the configuration (6400 euro) is not adequatelly