I worked there for a few months in 2019 and the prices were £68k, £71k and £74k (steel, 18k and 22k). Premium for precious over steel was reasonable. But I think the overall operating costs of these types of businesses have probably gone up over 7 years so it's not surprising that there have been increases. I believe the premium for gold versions is still not terrible considering raw costs.
Regards, Baruch