It seems that this isn't something they're interested in helping with. We've had to upgrade the plan, we took out the black friday deal which is a 1 off annual payment but it still cost us just over £500 which is insane since we only needed 2 of the extra features.

Yes, we upgraded just for the larger SKU inventory feature. It was a big jump, and we didn’t need the other features.

I completely agree, the ability to increase this on it's own would be great!