End of a lovely holiday, staying in a little bungalow. On arrival a week ago we were offered a homemade cake by the owner (to be made after asking us what we liked) and asked whether we wanted jam. Said yes please to cake, and that we'd come back to them on jam. Cake arrived, was delicious and big, have eaten about half of it as just two of us. Two jars of jam also turn up in kitchen when we're out. Can't open the jars so just pop in fridge and forget about them.
This morning owners have popped in to say we owe them 44 euro for the cake and the jam 
I know we should have asked how much at the time, I know I'm
going to have to pay them. But AIBU to say well bank transfer tomorrow, firstly because I've only got 35 euros on me as trying to run them down, and also so they'll need to email with the amount for each thing. I will pay, btw, as it's my own stupid fault - but I would be flagging the price when offered if in the £20 for a cake range. And they insist we take the unopened jam home - I may just leave in the fridge and ask for that to be deducted.