I bet a Pound to a pinch of Chinese Excrement you will regret selling the bike within 3 months you will end up with 8 or maybe 9 hundred quid cash that will disappear almost over night and then you have nothing to show for it.
I done stuff like that myself in the past because I needed a few quid because of pressing things to pay and regretted it evermore.
Sure you could possibly buy another at a later date, but, the chances are that the one you have now you know and have kept well maintained, a replacement you will know nothing about.
But we all have to do what we have to do.
Oh! one other thing, I could also mind my own fucking business.