Just found these on eBay, £10 inc P&P !

Description
Switching power supply, closed, 24V / 8,3 A / 200 W
Switching Power Supplies with built-in RFI filters. Low ripple, closed design with screw terminals. Overload protection by switching off, auto recovery. Short-circuit proof. 100 % burn-in test under full load.
Power: 200 W
Input: 85 - 264 VAC, 120 - 370 VDC
Output: 24V / 8,3 A
Manufacturer: MEAN WELL
Article number of the manufacturer: SP - 200 -12
Packaging weight: 0.849 kg
RoHS compliant
General type switching power supply
Execution closed
Electrical values
Voltage 24 V DC
Current 0 - 8,3 A
Input Voltage 85 - 264 VAC
Input voltage 120 - 370 VDC

Inrush 60A
Ripple 100 mV
Features
Short circuit protection yes
Overload protection yes
Connections / Interfaces
Connection Screw
Link: http://m.ebay.co.uk/itm/162036991360

Bargain no?

.Me