It's attractive to you. Developers complained to Google that 5% charge for microtransactions (small transaction) was attractive (i.e. beneficial) to them (the developers), but that as amount increase, they don't want to pay 5% which is a lot.
So they changed their pricing to benefit you, the developers and call it "Attractive Pricing". With this new pricing, you could be charged as low as 1.9% (and not the blanket 5%) for larger amount transactions. Here's more details on this.
Via: Updates to Google Wallet for digital goods including attractive pricing and subscriptions support.
First, we’ve heard feedback from developers that 5% transaction fees are great for microtransactions but not as attractive for larger transactions with higher order value. To improve your experience *selling higher priced items*, we’re introducing 1.9% + $0.30 (or local equivalent) pricing in addition to the current 5%. Google will apply the option that charges you the lower of the two possible transaction *fees for that order*. Learn more and see examples of when each pricing option will apply in the Help Center.