I've not personally seen a .me.uk sold, but looking on namebio.com and dnsaleprice.com, the .me.uk domains which have been resold all utilise the ".me" part e.g. ask.me.uk, teach.me.uk
and they've sold from $1xx to $9xx
graphics.me doesn't utilise the ".me" as a word / domain hack.
I can't see any domainers buying the name from you because me.uk is so obscure. If an end user wanted graphics.obscure ext, then they could reg graphics.uk.com or graphics.gb.com (both available at time of posting), and those names at least end in "com" and indicate a company, whereas "me" indicates a personal site.
therefore I would have to estimate the value of graphics.me.uk at reg fee.
:imho: