There is one of the few remaining original model shops located on the South Coast of England which holds a stock totalling many thousand kits. I have visited this shop. They have an abundance of kits that are no longer produced - and whilst they may be mainly of service to UK modellers they do ship around the world. However they do not produce lists (in fact it would be an impossible and fruitless exercise - by the time you received it it would be out of date and running to an enormous number of pages the postage would be more than some kits! The shop is :-
Plastic Pastimes - telephone/fax (UK code) 01202 746964 (same number for fax) and the address is 95 Commercial Road Parkstone Poole Dorset BH14 0JD UK
try www.kingkit.co.uk , he is a online oop website good too