Amazon is making changes to how its Prime Pantry service is priced. Rather than the flat $5.99 fee per box for Prime members of yore, starting today it'll cost you $4.99 each month for unlimited deliveries and free shipping on orders over $40. As Windows Central notes, if you aren't a Prime member, the per-order fee is bumping up by $2, and that higher fee will apply to anyone whose orders don't meet the $40 minimum. What if you're already an Amazon Fresh member? Nothing will change, from the sounds of it.