Not quite, that means you can now sell up to 500 items in total per month. That total includes active listings (and a multiple quantity listing uses one for each quantity available) AND sold listings. BUT it does not mean those 500 are all free. You get a free listing allocation with your store each month, an increased limit doesn't mean you get more free ones, it just means you can list more. When your monthly allocation of free listings runs out, you will be charged for any listings after that. So if you have a Basic store, you get 200 free listings, and even though you are allowed to list up to 500, only 200 of those will be free.
400 (basic) and 1000 (featured) for the next 6 months.
Not one of those worked on either mine or my mate's accounts, just the 40 last month and the 40 at the start of this month.
2664 has never worked in the entire time I've tried it (or maybe it only works once per person and I have already used it last year or whenever without noticing), and 3280 was invitation-only and didn't work either. April was a dry period for me, probably the second worst to December last year.
