Amazon.com is also useful however there may be difficulty with early titles that have no I.S.B.N. barcode. You would have to search by title and author.
There are 145 "Autocourse" volumes listed
HERE on the US website. Some of them are quite expensive.
The UK Amazon should display similar results. An Amazon account is easy to set up and is secure. It is possible to sell books worldwide but make sure of the shipping charges
before you list. Pretend it is being sent to Australia or Japan. Amazon's shipping allowances can be minimal and you can not recover more than they state. The listing set up page will advise you of all charges including the Amazon comission (~20%) before you actually submit the listing.
I have sold books from the US to Italy and South America but almost lost money due to the shipping.
. .
