deadsea - 12:05 am on Jan 21, 2013 (gmt 0)
I wouldn't use 410 for these pages. What if you get more products again and the pages come back? Seems like a very likely senario.
I've used 302 (temporary) redirects to redirect back to page 1 in this type of situation. You certainly don't want to use 301 redirects, because like 410, that implies permanence.