How much should i sell my Laptop for?


Dec 29, 2016
Hello, So i am from the UK And i own a Lenovo Thinkpad U430 Touch but it kinda drives me mad so i want to sell it for something else. I used to own a Lenovo T420S which i loved but i was given the U430 from a family member so i sold the T420s which is my biggest regret so far in terms of laptops as it was far better and just felt faster. Now i want to sell this U430 and switch to the Thinkpad T440p Which can be found fairly cheap these days on local selling pages such as Facebook Marketplace.
I don't know how much to sell it for though.
The specs are:
Intel Core I5 4210U 1.7ghz
120GB Kingston SSD
Touchscreen display
Nvidia Geforce 730m 2GB and Intel HD 4400
Windows 10 Home
Condition wise it's in fairly good shape apart from having a slight knock in the top right corner of the screen and a few chips on the body, one of the USB 2.0 ports just won't work on the side either and i don't know why.
I'm from the UK so £ Pound currency is here not $$$
Thanks if anyone can help out.