I don't use any of their other services, I pay for Netflix and Spotify and I get free full res photo storage with my Pixel XL. I just counted the items I've bought from Amazon this year; 26 items. I just input "80/26" into my calculator, and it says £3.07. That isn't free! It's not even close to free.
And, I'd like to remind you of your original statement:
So you pay a subscription for a service you don't use much? Not entirely sure what your argument is? If I paid monthly for Spotify and rarely used it then that'd be largely pointless wouldn't it.....
In any case, your 26 items at the Post Office (assuming all items less than 100g (the weight of a single DVD), and the smallest parcel size) those 26 items would have cost you £114. Can I assume that your 26 items weighed more than that of a single DVD? Had you bought a circular saw as part of those items, as I did, it would have cost you £43 for a single item.
I'm also unsure as to why you remind me of my original statement? You've just proved me entirely right?
Even with your relatively low delivery total of 26 items;
Amazon - Next Day - £3.00 per delivery (whether it's a DVD or a Sofa)
Elsewhere - 3 to 5 working days £3.99 per delivery. (or £4.99 for a pair of trainers, as described above).