First build i9-9900k, RTX 2080ti, fast and lovely by P0ppski - Intel Core i9-9900K, GeForce RTX 2080 Ti, Lian Li PC-O11 Dynamic ATX Full Tower - PCPartPicker
Best Buy: iBUYPOWER Gaming Desktop Intel Core i9-9900K 16GB Memory RTX 2080Ti 11GB 1TB HDD + 240GB SSD Black BB054I