Smart docs add on pricing

Hi Pipedrive,

In my PD if I click Documents NEW it says pricing starts from $32 a month per company.  That's equivalent to about £24 a month in the UK. But when I click on the Explore Features button, the pricing is listed as £39 a month.  Even though the £ is worth about 1.35 USD, UK customers are being charged about 60% more than the equivalent USD pricing.  

Can you clarify why it's so much more expensive for a UK customer vs a US one please?  It doesn't seem very fair.

Thank you.

Graham