Refund for a stroller

it isn't up to the manager what to give back.
unless you have had some use out of it... which the OP hadn't.

as soupdragon says, you do not have to have a receipt anyway. but some form of proof is in your favour obviously.

they don't have to refund anything, but if they do they have to refund the current price.

it wasn't a sale item.

it had beenb on sale previously, for £24.99

it was purchased after this, at a price of £29.99. the current selling price is still £29.99 and that is what should have been offered back

You don't need a receipt though, you need proof of purchase which could be a bank or card statement. Oddly enough, there is no legal requirement for a store to give you a receipt (I've been googling ).

actually its up to the manager what to gve back. as the stroller was a sale item within the time frame of a normal returns policy -4ish weeks- then she could have bought it then. obviously in this case she didn't but the stre don't know that

don't think that the op is questioning whether or not she is entitled to the refund.
she has accepted a credit note.

what she wants to know is whether they can give her a lower amount than the pushchair is currently selling for.
and the answer I believe is no. you shoiuld be offered the current price back

they don't HAVE tio refund at all unless its faulty but they are "supposed" to offer the current selling price if no proof of purchase, depends on when the sale was and the discretion of the staff there really

They don't actually have to refund you at all if there's nothing wrong with the item.

Without the receipt, they don't know when your mum bought it - as far as they are concerned she could easily have bought it 4 weeks ago.