Last time I bought from Rapid ( ages ago) I paid few £ for delivery. Some items are cheaper some not. The same IGBT I needed were cheaper in Farnell and wider selection of them. For me personally not always price matters but service you receive, but this is individual. Small items Farnell posts with Royal Mail , bigger -courier. I was pleasantly surprised when I placed order 2pm and had my components next day in the morning with everyday post. Return: nearly instant reply, next day replaced part and collection. With e-bay shops - they exist today, next week they've gone (maybe exaggerated but true).