With orders of $25 or more, Amazon offers Valkyria Revolution for PlayStation 4 for $9.62 $8.95 with free shipping. That's $4 under last month's mention (although that didn't require minimum spending) and the best price we've seen. (It's a low now by $10.)

Note: This item is offered as part of Amazon's "add-on program" and can only be purchased with an order of $25 or more.