Changing sim data - is this the new price or an additional cost on top of my current plan?

[Allyp123]

Hi,

I currently have a SIM past the 12 months mark and have gone into my account to change my plan using the 'mix' tool. 

Are the prices for each level of data an add on cost to my current plan, or the new cost? For instance I pay £12 for 10mb but it's showing 100mb as £5 and then 3mb as £10 so it's super confusing if this is an add on or if it's the cost to reduce a plan. 

Don't want to select a plan and then realise it's an add on cost rather than the new price. 

[63johnw · Accepted solution]

Hi @Allyp123  thats the total price, not in addition to your current sim.