You can gain access to prodeals from several companies based on the industry you're involved in. Many prodeals can be had directly from the company whereas others are done through a prodeal portal.
For instance, REI employees have Snaplink (their intranet) whichs provides direct access to prodeals from all the companies they work with.
For smaller companies like MomNDad's Outfitter, you can sign up with a Prodeal specialty place such as
www.3point5.com and/or
www.promotive.com (same company, different level of deals). These places will offer the individual a suite of products based on what the store sells or what general industry (climbing, cycling, etc) the store is involved in.
Promotive allows you to ship the products directly to yourself whereas 3point5 requires shipping directly to the retailer.