Sell price

I have an old system I'm looking to sell. And I have no idea what its worth. Specifically the motherboard, which is a LanParty DK X38 Dark (LGA 775 Socket) The LanParty boards on ebay are almost all over $100, which is surprising for 15 year old boards. And the prices fluctuate greatly. I'm...

My laptop is https://www.asus.com/uk/Laptops/ASUS-FX553VD/ And i upgraded the ram from 8gb to 16gb bought it in 2017 for about £800 have used every since but not heavy use just light gaming what should i sell this for if anyone could help that would be great. PS. it has a gtx 1050 4gb

I have had my computer for 3 years now and my cpu is starting to be a bit old. I want to replace it for a new one but since it's an older socket, the newer cpu wont fit. Also, my ram is ddr3 wich is old too. I am looking to sell this as a combo but I am not sure of the price at all since I have...