Adams Gold

went in the other day to sell some old jewellery bits . had done previous research and looked at all the up to date uk gold worth put in exact weight and caret and got my answer about how much it would be worth all together bare in mind i checked various different checkers and all got same answer which was £113 , everything i had looked at was the same answer. so i go to adams gold he weights it all everythings fine but then tells me he can only give me £60 for all of it managed to push it to £80 but honestly i feel like i been completely ripped of honestly and for reference it is £17.84 per gram of 9caret and i had 6.38 gram which should of added up to £113.82 so tell me how the max he could give was £80. would never use adams gold again never had this problem before till i came here, honestly dont feel like could ever trust them again