this is a good price, i recall when JUST THE 12 bay 2u SAS3 expander backplane (BPN-SAS3-826EL1) would cost this much (or more). it actually still does.
About 1 to 1.5 yr ago i bought the 4x NVMe variant of this exact 2u system (paid ~6-700$ for it, barebones). it did also have the 2x 10gb copper add-on card (and the x10-dri board, not the x10-dru like this one). I will say that this:
- It pulls more power than i expected (see below)
- the board that came with the system had weird power issues (ie would not power up unless i cycled removing and inserting one of PSUs / and or ran it with just 1x psu) , i ended up going through 2x more x10-dri boards in total that had similar issues like this (from different sources), but the final board that did not have this issue, has been rock solid 24/7 since then (~ 1.5yrs now), and under pretty heavy vmware VMs load, since then.
- Its fan ran way louder than needed (common w supermicro), even on optimal fan setting. The 10g NIC addon card is consistently the hottest part according to ipmi. I ended up putting all the fans on a 20$ noctua fan controller (with knob) that still allows the MB to adjust the fan speeds, but at a much reduced RPM (so is quieter). And i can adjust this with the knob if needed.
overall, outside of the power issues i had with some of the boards, ive been very happy with this ssytem, and its 4x nvme u.2 bays!
some of my power draw notes for this system (CPU= 2620-v3):