There's a nice hardly used Lionstracs MS on sale on ebay near you, about £1800 he might take a lower bid on it, it's been on ebay a while now, that would solve all your problems, keep you busy for a year or two...
TWD you don't want to be telling all and sundry about the dropping price of the Tyros range, you will never sell them, BTW what's a two year old Audya selling for now compared to new price, way less than half I'll be bound.
Look when you buy a top of the range KB and try and sell it two years later, not one of them hold their price, buying a new keyboard is worse than buying a new car, even a car doesn't loose these values, and frankly no KB on this earth is worth £4200.
The cost to build KB is a fraction of this, and I don't need a lecture about investment in software please.
If people want to buy a KB they should do like Diki, love it so much they would never part with it, one word of warning about this kind of behaviour, if we all did that we would all be playing what we were playing 10 years back, zero churning zero investment, the real World is not like that. People move on, unless you know different, look at Donny he's done some churning this last few year.
Here's a thought, in the last ten years how many Kbs have you had, I am on number 5, BTW TWD if people didn't churn your shop would be selling pies, you thank your luck stars that people don't like the Kbs they play, don't knock it, just think if all the people that walked into your had their pockets stitched up...
Your old ship mate Tony, hope you and your family are well and keeping you head above water (floods)
Regards