Watch out for the Repsol delivery guy, I know there are a few but ours just visited the village...
We changed 3 bottles the old orange heavy ones.. and he dragged 3 new blue tops off his vehicle - I gave him 50 euros and received .80 cents change - a brief discussion about the price followed and he swopped the blue tops for the same as we had returned.
I gave him the 0.80 centimos back and received 6 euro 50c in return.
The blue tops are 16.40 and the full orange are 14.50 - excuse is that they are aluminium therefore dearer because lighter - ok I have a muscle or two but for now I'll enjoy the price of a pint difference.
Don't be fooled into upgrading your bottles.
Cheers !!