Here is the language from their Terms of Service:
4.8. Withdrawals. To withdraw funds from your Account you will need to request a withdrawal from the Cashier page of your Account. You may request a withdrawal of any amount up to the full balance of your Account. If we are satisfied that you have complied with the Terms, all AML and fraud-screening requirements, and all rules relating to the Games and any related bonuses, the payout shall be made to you. The manner in which the withdrawal is processed may be restricted, depending on the means by which the initial deposit(s) was/were made to the applicable Account. Without limiting the foregoing, we reserve the right to conclude your withdrawal request by an alternative method or process at our discretion. If, for whatever reason, a payout request cannot be approved, a Customer Services Representative will contact you.
From their FAQ:
Bovada covers your fees for one withdrawal per calendar month using eligible methods. Subsequent withdrawals in the same month will incur a US$ 50 processing fee. Some premium withdrawal methods may have additional fees attached to them.
If applicable, fees for residents of your area will be displayed on the
Withdrawal page when you are logged into your Bovada account.
Are there withdrawal limits?
Yes, limits are based on the withdrawal method chosen. Please refer to the chart below.
WITHDRAWAL LIMITS
Method Minimum Withdrawal Maximum Withdrawal
Check by Courier $50 $3,000
Rapid Transfer $100 $400
Note: Users are limited to one withdrawal per method, per seven days, except for Rapid Transfer transactions, which are limited to one per calendar month.