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Discount User Upgrades

#1
Hey guys, we have a tiered upgrades system, and I was looking for a way to discount higher upgrades if you purchase a lower one.

Example:
I buy Gold Donor for 20$, and want to upgrade to Diamond Donor (Normally $30), but since I payed $20 already, it's only a $10 upgrade.

I haven't figured out a good way to do this. =/ Any ideas?
 

Chris D

XenForo developer
Staff member
#2
You might want to speak to Naatan, as he created this add-on: http://xenforo.com/community/resources/advanced-user-upgrades.639/

Interestingly, he includes some tiered options.

Not sure how it works with your model, but it allows you to disable some user upgrades for users, if they've already bought another.

So I guess it would mean that if someone buys your Diamond Donor upgrade it would automatically disable the Gold and (presumably) Silver upgrades so they couldn't accidentally buy multiples.

I just don't know how it would work in the other way you want.