Hi, i'm obsessed with these phones. Have bought 2 off ebay from separate sellers, one was fine but the second one arrived totally smashed through the post. I've found ebay to be the cheapest by a LONG way and have a good selection, but if you do buy from ebay make sure the seller packages well (my seller didn't even use a box, doh)

Also may be worth checking local antique centres and carboots as an alternative, especially if you want a bargain