A: Hello! The equivalents are:
Tier 1: 250 credits -> $10 / month
Tier 2: 750 credits -> $12.50 / month
Tier 3: 1,000 credits -> $15 / month (same as our monthly Gold plan)
Partially influenced by the fact that free users on our platform used to get only 50 credits, but we decided to give them a whole $5 of usage in the new system. We wanted to make sure AppSumo users were still getting a substantially better deal, so we scaled up their dollar allowance.

Hope that helps!