I used a 1/2kg tin of dylon, not sure how much of it I used, as I just keep adding until they dyed
But give the Rit dye a go, the Dylon cost me around £42 with postage
That big bowl came from an asian cookware shop in Tooting Broadway, I used to live in Streatham years ago & my dentist is still near there so I go there about twice a year & saw these pots sitting in the shop windows, there are loads of these shops there