There are quite a few delivery companies that do it far cheaper, but as for packaging I'd advise against using bubble wrap for the monitor. Foam blocks that came with it originally would be better as stress and shocks would be applied to the frame rather than directly onto the more vulnerable panel surface.
Anyhow, I've had quite a few desktop machines get bashed around when using parcel services that I generally don't trust non-specialized couriers with my kit anymore.
But if you are looking, places like this do it pretty cheap - and they use the main reputable carriers so there's no issue of trust:
http://www.parcelmonkey.co.uk/
http://www.interparcel.com/
A 15Kg box with them starts at around £20 to France with 2-day economy service. But beware, most places won't insure valuables (i.e. computers) in transit.