OP.
If you don't mind buying from overseas.
Topping D50.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F112870302035
Just been reduced, seller has over 5000 feedback at 100% positive so I don't think you need worry too much at an overseas sale.
If you don't mind buying from overseas.
Topping D50.
https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F112870302035
Just been reduced, seller has over 5000 feedback at 100% positive so I don't think you need worry too much at an overseas sale.