Not to reign on your guys parade but some things seem a bit worrying to me about this product you are purchasing.
From their web site;
Product structure: Main body, Adapter Operating Voltage: 110/220V 60Hz Wavelength: 808nm Size: 280 X 175 X 65 mm Material: ABS & etc. Power Supply: DC 12V 1200mA Adapter
The mains power is very low for a semi-conductor laser. 12 Volts DC x 1.2 Amps = 14.4 Watts. This is not much more power then most diode pointing devices. Compercial lasers like the LightSheer ET which I was treated with draw over 12 Amps from the 120 Volt AC Mains for a power consumption peak of over 1600 Watts.
Also it is speced for 60Hz operation not the 50Hz that exists in the UK though I imagine the AC/DC converter brick will function well enough given the low power that is being converted.
I am not stateing for fact that the Epila will not work but that you should be skeptical of any home do-it yourself kit.
One last pet peeve of mine is that the instructions and general language used on their web site, is at best, lacking in coherency and technical correctness.
Be careful as 14 Watts continuous power is more then enough to burn skin and hair if held in place to long. My concern is can it effectivly generate the peak heat needed to kill the hair germ cells without causing too much collateral damage to the surrounding tissues. This is why commercial lasers have such high power so they can deliver the energy in short bursts that minimise the time for heat to travel to the surrounding tissues.