For example a Canon 28-135 IS USM lens, Bristol Cameras normally have quite a good price on such things, charge £325+£10 shipping (cf. £375 from Jessop's). Digital Pear (who I know nothing about, just found via Google) charge €426+€22.76 shipping, or a total of £303.80.
The Digital Pear price for a Panasonic AE700 projector works out to £867.71, the cheapest I've found in the UK is £999.