I often recommend TLC here as being a 'one stop' electrical supplier where a basket of goods will be pretty competitive. Indeed, I recently mentioned them in connection with an 11 pin mains relay for by CH emergency back up system. I'm in the process of making the final version, so wanted to replace the rather tired and battered relay I'd used in the prototype with a new one. So off to TLC for that and some other bits.
On buying the relay and base, I was surprised to find RS components numbers on the packaging, and RS logos on the parts. So looked up the RS price.
TLC RS Relay 10.10 7.71 Base 5.30 3.58
All plus VAT, of course. And the RS price is for one only - buy several and it comes down.
Of course it's my fault for not shopping around. But I had so much confidence in TLC that I thought it wouldn't make very much difference on a component like this which is unlikely to be on special offer anywhere.