I was considering purchasing the 20 rd drum months back(wish I had) when the price was only $185.00. it took A LONG time for the gents that bought in to see the actual item. I was told that they purchase in bulk from the mfr and that the MFR sets all of the dates. Did you buy an actual shotty? these saigas DO sell out quickly and importers cannot keep up with the demand. I have had one for two years and the first year was IMPOSSIBLE to find any accessories or parts for it, now they are everywhere, but SOLD OUT and on back order.
I wouldnt worry too much, if you put it on a ccard, you always have the option of disputing the transaction(depending on how long ago you made the purchase)