What criteria must a customer meet to purchase a balance swipe?

To purchase a balance swipe, the customer must buy a package of sufficient size. This criterion is important because it ensures that the customer is making an investment that justifies the use of services requiring a balance swipe. Packages that meet a certain size likely correlate with the frequency and intensity of usage, thereby making the service more efficient and beneficial to the customer.

Other options, while they could relate to customer loyalty or previous offers, do not directly address the operational requirements of utilizing a balance swipe. For instance, receiving previous promotional offers or having been a regular customer for over a year speaks to loyalty but does not ensure that the customer is ready to engage with services at the required level. Similarly, having a balance of at least one month may indicate past usage but does not establish the need for or appropriateness of purchasing a balance swipe. The focus on package size aligns with the business practice of encouraging customers to commit to more substantial services that best serve their needs.