Always eBay
, the 350 is a bit old now, 400's are going cheap. 1000's 450's and the newer 1100d would be better buys if you can find the extra dosh. 2 eBay sellers to look at would be
Canon UK and
AllDigital. Canon Uk stuff is like new, but mostly later models, AllDigital have some 350's but are body only.
Digigood have some good price current models, may be imported.