ASRock B550AM GAMING Motherboard Set Kit with Ryzen 5 5600 CPU 4xDDR4 M.2 NVME HDMI AMD B550 Support
Aliexpress UK
Ram 2 and 3 not reading need repairs hence the price..
eBay
MOUGOL X79 Gaming Motherboard Set with Intel Xeon E5 2689 CPU Dual-channel DDR3 8Gx2 RAM for
Aliexpress UK
Untested faulty customer board. Customer states "turned it off one day and the next I couldn't get any display" so we did a motherboard swap and ruled this to be the culprit. Take it as spares and parts only as I cannot guarantee this was the cause of the fault Comes with everything you see in the box in the pictures. Any questions feel free to ask!!!
eBay
MOUGOL X99 Gaming Motherboard Kit with Xeon E5 2650 V4 CPU & Dual Channel DDR4 16G (2*8G) 2133MHz
Aliexpress UK
New in box. Our son never used it , ended up with a different one
eBay
ENVINDA X99 Gaming Motherboard Kit Intel Xeon E5-2680 V4 Processor 16GB DDR4 2133MHz Dual Channel
Aliexpress UK
Used Motherboard taken from a ASUS PC.
eBay
SOYO X99 Gaming Motherboard Set with Intel Xeon E5 2680 V3 CPU DDR4 16G 2133MHz RAM M.2 Computer
Aliexpress UK
Used motherboard good working order see pictures for details  Please study pictures and make sure you are happy before buying Advertised elsewhere, so we end at any time  UK mainland postage only  Check out my other items Thanks for looking 
eBay
SOYO X99 Gaming Motherboard Set with CPU Intel E5 2680 V3 CPU & DDR4 16G (8Gx2) 2133MHz RAM M.2
Aliexpress UK
SSD 128 GB.
eBay
SOYO X99 Gaming Motherboard Kit C612 Chip with E5 2650 V3 CPU & DDR4 16G*1 2133MHz Memory NVME
Aliexpress UK
We are located in Japan.For electrical products, check the manufacturer and product and convert to the voltage of each country.Please note that we have many second-hand products (100V) that were used in Japan for sale. If you have any questions, please feel free to contact us at any time.We plan to ship by FedEx or DHL.Please contact us as the shipping fee can be changed in some cases. -Import duties, taxes, and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. -These charges are normally collected by the delivering freight (shipping) company or when you pick the item up - do not confuse them for additional shipping charges. -We do not mark merchandise values below value or mark items as - gifts - The US and International governm.
eBay
SOYO X99 Gaming Motherboard Set with Intel Xeon E5 2680 V4 CPU& DDR4 8Gx2 2133MHz Dual Channel ECC
Aliexpress UK