$180 · Reduced: Paying the standard rate would genuinely prevent you from joining, and you don't currently have access to employer funding, client income, or a professional development budget.
$270 · Accessible: The standard rate is a stretch, but you have some access to income, savings, or professional development support.
$380 · Standard: You can pay without financial strain, or this is a professional/business investment.
$410–450+ Pay it forward: You have stable income or employer support and would like to help fund reduced-rate spaces for others.

These are only guidelines, choose an amount that is genuinely right for your situation — including currency differences or circumstances not listed above.