LocalMaven suggests offering Mavens a commission between 5-10% of the total transaction value to make it worthwhile for them to promote your business and bring you deals. There are two types of commissions - a flat rate or a percentage of the final transaction amount when the referral code is redeemed. The knowledge base provides more details on commission structures.

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Knowledge Base Article
www.localmaven.com
How Much of a Commission Should I Offer to Mavens?
This depends on the nature of the deal and the business. However, LocalMaven
suggests offering between 5% and 10% of the total transaction value. Be fair. If
your Mavens are bringing you business, you want to make it worth their while
and want to continue to promote for you.
There are two types of commissions. The first is a flat commission rate. The
second is a percentage-based commission, which means the Maven gets a
percentage of the final transaction, which is entered when the referral code is
redeemed.
To access the complete LocalMaven knowledge base, visit
support.localmaven.com.