I would consider £4k rrp or so to be absolute max. Certainly £10k+ seems a little crazy. It's not that I can't afford it, I just can't see that it'd be worth it. I tend to buy second hand to keep the price down, so would be looking closer to £2k.
The Aries retails for a fair bit more than the Zen mini, have you compared these? Surprised it's not at a similar quality level.
Cheers, Tim
I would contact Lukasz Domanski (LDMS)
I'm sure he can cater your budget and arrange a home demo for you
His service is absolutely excellent. Also and especially after-sale