Recently had a tip section break on a Greys GS2 which I hadn't had long, didn't have the receipt but spoke to them on the phone and was told to send the section in and as it was less than a year old it should be replaced free of charge without the receipt.
Recieved a letter a few days later from Greys stating it was going to cost the best part of £40 to replace, the cost of the part £8 and the rest was ADMIN

I decided to send an email complaining about the cost and that it was initially indicated to me over the phone that I would receive the section free of charge and would they please review their decision, got an email back the next day telling me that on this occasion they would replace free of charge and the section duly arrived within a couple of days, so overall with me not having any proof of purchase date I was obviously happy with the outcome