Still a fair price for a genuine server board, the modern likes of which are 400-500 €.
But a that price level an E3C246D4U2-2T gets you 2 more SATA ports, 2 x4 M.2 slots on-board, x16/x8 + x0/x8 slots and 10GBase-T.
With a single x16 slot and a x8 dGPU, you’ll need a x8x8 riser and a bit of creativity with extension cables—and move your app pool to SATA SSDs.
So plan ahead to avoid headaches!