I experienced a weird Amazon phenomena this week...

After googling for clarification, I found it seems to have plenty of other people puzzling as well..

I was having a usual random browse through Amazon guitar effects and synthesizer listings,
when I noticed a few arbitrary items
included an option to pay for them by 5 monthly interest free installments..

I know Amazon sells their own echo products on installments from time to time.
But was surprised to see a random range of products from other brands as well this time.

Obviously I bit the lure, and immediately chose to buy an item for £30 per month.

Then, after the purchase, I went back to choose a second installment purchase,
only to discover all the other instalment listings had disappeared...???

This is a unexpected pattern other UK Amazon users are reporting.

Whatever Amazon is playing at,
It's suckered me into looking into their website a bit more frequently just now,
in hope of some more surprise time-limited instalment listings...