I work in retail and can confirm that there are far more ditherers than decisive people out there.
What should happen is this:
1/ Make a decision about what you want to buy
2/ Take to appropriate till
3/ Pay.
4/ Leave swiftly.
What does happen though is usually:
1/ Pick up several tomatoes, put them back in the wrong place, drop some, squash some beyond even the dreams of passata., leave some in random places round the shop to be discovered two days later.
2/ Find a member of staff and ask penetrating questions about how much tomatoes are when the price is clearly and repeatedly advertised next to them.
3/ Ask member of staff which tomatoes they think are the best thing to buy, given that tomatoes are identical. This is sometimes bookended by irrelevant anecdotes about tomatoes, and sometimes potatoes.
4/ Take to till
5/ Lose ability to locate purse/ decide that there's something they've forgotten and set off at great haste back to the vegetation section, probably to repeat points 1-3 again with another unsuspecting member of staff. Return, forgot where they put purse. Forget how to use contactless. Repeatedly ask if we take Amex. Insist on paying the whole amount in shrapnel.
6/ Upon completion of sale, produce a 10p off coupon and then insist on seeing a supervisor as I now cannot do anything about it.
The upshot of all this is that so am an absolute DREAM customer.