Slushy review
Slushy offers creator subscriptions and a prepaid wallet. It is worth separating subscription renewal from wallet refill because the payment policy describes them as two different settings.
Two ways charges can recur
The payment policy describes renewing creator subscriptions and an optional wallet refill when your balance falls below the amount you chose. It states that member payments and wallet credit purchases are charged in US dollars. A card in another currency may add conversion costs. MyDirtyHobby also uses prepaid credits, with its published terms distinguishing an individual unlock from an interaction charged by time.
How co-creators confirm permission
Slushy documents identity verification for creator accounts. Its creator terms require written permission from other people shown, including consent to distribution and uploading. For material covered by its co-creator rules, the terms describe verification and approval steps that depend on whether the person is already a verified creator or holds another type of account.
Anabel’s take
I'd check both renewal and refill before paying. If I meant to try only one subscription period, I would want to see which payment will renew and whether the wallet can replenish itself.