> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/welcome/pricing/general-pricing-rules.md).

# General Pricing Rules

## Pricing Model

The specific pricing model is subject to the regulations of services. Generally two kinds of pricing models are supported in zenConsole: [**Subscription**](/welcome/pricing/general-pricing-rules/subscription.md) and [**Pay-as-you-go**](/welcome/pricing/general-pricing-rules/pay-as-you-go.md).

## Timezone

The general timezone used for bills is Coordinated Universal Time (UTC), UTC +0.

## Currency

The transaction currency on zenConsole is USD, which can be used for all spending on the console.

* You can refill your balance using credit card, PayPal, AliPay, and wire transfer.
* You can withdraw your balance by submitting a ticket on zenConsole, or sending an email to <mark style="color:blue;"><support@zenlayer.com></mark>.

## Vouchers

* Vouchers can be used for fee deduction only in specific scenarios. When you apply for refund, vouchers that were redeemed cannot be returned.
* Vouchers cannot be deducted for overdue payment, or be transferred, withdrawn, or invoiced. The validity periods of vouchers cannot be extended.

## Promo code

Promo codes extra benefits provided for more discounts. However, promo codes cannot be used in conjunction with term-based discounts. The highest discount available will be applied.

## Bills

You can go to the [**Billing Center**](/welcome/platform/billing-center.md) to view the details of your bills.