Feature request: show total Sponsored Level or discounted price at checkout

[michaelbeil]

Is your feature request related to a problem? Please describe.
Show total price in the renewal text.

Describe the solution you'd like
Show updated price based on how many seats are added or if a discount is applied.

Describe alternatives you've considered
Translate the text Yes, renew at %s in the Add On to something like, Yes, renew automatically, so that showing the price is not an issue.

Additional context
A customer submitted a ticket (446355) regarding this:

For all sponsored memberships it displays a ‘Yes, renew at $XXX per Year.’ but it gives the price only for the first sponsored account and not the multiple.

For example: 1st sponsored account $100, 5 seats at $80 each.
Yes, renew at $100 per Year.
This should say renew at $500

Displaying the wrong price here is misleading and will lead to lots of disputes.

[kimcoleman]

This is being referenced in the Payment Plans Add On here: strangerstudios/pmpro-payment-plans#53

While the best fix would be dynamically changing the ARC label text, an option could be making the labels "generic" and not include pricing data. For example: "Yes, renew automatically | No, renew manually"