Mechanical cocker with no real upgrade = £80-£120 depending on the style.
Impulses aren't worth toss now, due to the ion, which is a shame 'cos they're a good, dependable marker, if a bit heavy and tall.
Possibly your best bet, not the most PC of things and involves being a regular at a site, is to sell it off to a punter who is getting into walk-ons.....most site-players don't have the contacts/mates/sponsorship that most people on these boards have and would be more at home paying top whack off-the-shelf prices, so you'd be able to get a bit more for it.