We find this the cheapest supermarket in Sitges, for general all round shopping, you can fill up your trolley and be very surprised at the check out! The staff are friendly and helpful, the produce is good, the cleaning products are great...(my sister who has lived on Lanzarote for 20 years) gets them shipped in!

There is fresh cream in a tub, PG teabags. You can also shop online Register here.

I assume you mean the big supermarket near the station. It's not open on Sundays though. I agree that it may be the cheapest, but it reminds me of ASDA which is far from being my favourite supermarket here in Brighton, UK.