Best offers. What is reasonable?

[boogiewoogie]

10% off? What would be considered taking the Mick?

I've recently offered £30 for a £50 item, he counter offered £35 which I gladly accepted. Be as cheeky as you like, it either gets declined or you end up with a bargain.

Thanks for replies, it's good to know what people find realistic as I do not wish to insult the seller or buyer.