I've just managed to finally get my products to come up thanks to a lot of digging about and no thanks to Google's help centre.
I'm rather shocked at the untidy nature of the Products/Base process:
1: They don't make it clear you have to bulk upload to make the listing link directly to your site and not the Google Base listing. 2: They don't make it clear that you need to NOT have a location for your product to show up on Product search and not just Base. 3: They quite randomly switch between .com and .co.uk which is a problem as .com says I have no items and .co.uk says I have 40! 4: The .com/.co.uk problem also screws with currency listings!
I know its all free but does anyone else expect better from Google?