An Amazon worker moves boxes on Amazon Prime Day.Spencer Platt/Getty ImagesAmazon's October Prime Big Deal Days include some non-traditional holiday offers, such as chainsaws.It shows how Amazon is expanding holiday sales — and trying to get Prime members to buy more.Other retailers, from Walmart to Lowe's, are also getting on the October sales bandwagon this year.Many of the deals that Amazon is advertising for its Prime Big Deal Days this month aren't your typical holiday gifts.To be sure, the company describes the sales event as "epic deals ahead of the holiday season" (note the "ahead" here).