I have been busy and my site has every single plant on it that will be for sale later (if you did not know i have bought a load of seeds and i intend to grow and sell) i incorporated a roman cart shopping cart, the free version to try out for now, it also gives the option to disable an item that is out of stock, the item remains on your site but when yopu add to cart you get an out of stock message, no need to remove it from your site
the free version only allows you to accept cheques postal orders, no online payments until you upgrade romancart then you can then accept online payments via paypal for example,
i managed to do this useing WPG bearing in mind that it is not geared for an online shop, i found it a bit confuseing at first but once you get usued to it it is really easy to use
take a look any comments most welcome
www.gardenplantsbypost.com dont forget i am still playing around with it
Phil