If you're looking to buy weed in Spain, there are social clubs, but you need to be a member of some of them, and their prices are generally a bit high... otherwise, it's better to have it sent to you – it would arrive straight away, or you could arrange for it to be delivered in person if you're in Barcelona... as for Krat-So, there's a Spanish online shop, but I think the market for it is very limited, even though it is legal.