Promotion Pricing Error?

So… I got an email for cyber Monday promotion:

You can now upgrade your Free license to a Pro license for only 12.15 GBP.
That means you can have a Pro version of your favorite email client for
a savings of 60%!

    “Why not!?”
*Looked at the regular price*  -  £29.95.
*Sees checkbox for ‘Lifetime version’*
    “Hmm, They could update to v7 next week for all I know… What’s the lifetime price?”
*ticks lifetime checkbox*  -  £59.95

So is it really 60% off?  Because 40% of 60 is 24.
*Clicks the link in the promotion email*
*Notices ‘lifetime’ checkbox*  -  £30
    “…Well then.”

Let me just say - Non-Lifetime Pro versions of software irritate me.  I imagine other people too - especially when it’s not clear what your update cycle might be.
I’ve decided against this promotion because I’m a cheap bastard.

If you’re going to send out a promotion for 60% off - make it 60% off everything, or at least be very clear about what you’re promoting.  I thought you guys should be aware of this - even if it makes no difference.

Hi Kyle, I’m terribly sorry for this error on our website, can you please contact our sales department at sales@emclient.com, I’m sure we can work this out.

Regards,
Paul.