You’ll almost always purchase your promotional bottle opener ring from a distributor. Most distributors work with multiple manufacturers to offer a range of bottle opener rings (and other promotional products) that will appeal to any client. They can also help you plan your campaign, from choosing the bottle openers to distribution.
As with any bulk order, your per-item price for promotional bottle opener rings gets lower as your quantity increases. These discounts are tiered at pre-set levels, so be sure to ask what quantity you’d need to order to get the next price break: you can always distribute a few more bottle opener rings. Some distributors also get better discounts from manufacturers based on their overall volume.