Johannes, this is none of my business but if you want to sell a £1000 amp then you really need to do more than this.
Your photo link goes to a single, very bad, very blurred photo.
You give no details of what this amp is, how powerful it is, what the controls do, even how big it is.
If you want to sell on a (mainly) British website then you should offer a quote for delivery to Britain.
Remember that we know nothing about you at all except your posts on this For Sale topic. You haven't been here long enough to make friends on Basschat, so you need to work a bit harder if you want to sell this amp.
I'm trying to be helpful.
mfg