There are a number of items on the Amazon site that are priced competitively but ONLY come with a Amazon Prime delivery although this may not be that obvious. If you attempt purchase one of these items you are not given the normal option of selecting a non-prime delivery but appears that you are automatically signed up to the 30 day Prime trial.
I assume that if you don't realise and fail to to cancel within the 30 days the CC or Debit card used to purchase the item will be used for the circa £100 prime subscription.
I really hate the sneaky ways that Amazon are attempting to sign people up to Prime.
Strangely the listing also had [quote] Note: Available at a lower price without Prime delivery from other sellers [/quote] The price from other Amazon Marketplace sellers (not Amazon itself) was cheaper by around 1%
Not wishing to buy from the Amazon market trader, nor wishing to have a Prime trial, I deleted by items from the Amazon shopping basket and purchased from another supplier who are slightly more expensive but will deliver for free on Sunday, giving me a timed slot via text first thing Sunday morning and with real time tracking while my items are on the van.