The Choice Is Simple
Choosing the right prefix can be a bit confusing. 13, 1300 and 1800 numbers are a powerful business tool and deliver features not found in other business numbers.
Although their features are virtually the same, there are some differences you may want to take into account when choosing a prefix.
If your primary objective is to express full commitment to your customers, a 1800 number would be the better choice, especially if it's used as a customer service number. If on the other hand, the main objective is to simply boost business presence, then a 1300 number is just as effective.
If you aim to promote your business through large scale, ongoing marketing activities, a 13 number would be a good choice. Depending on the scale of the marketing campaigns, a shorter and easier to remember number will generate the additional revenue and justify the additional expense of the yearly government fee. Many businesses which are actively mass marketing their brand and product range choose the 13 prefix.
There are some definite differences between the numbers, and depending on the specific business requirements, it may be better to go for one or the other. But either way, getting an inbound number is better than not getting one at all.