Texture pack and skin files already located on the local machine

You can easily get acces to the texture pack and files without buying the resource pack. Path to file:
C:\Program Files\WindowsApps\Microsoft.MinecraftUWP_0.150.0.0_x64__8wekyb3d8bbwe\data\resourcepacks

C:\Program Files\WindowsApps\Microsoft.MinecraftUWP_1.0.700.0_x64__8wekyb3d8bbwe\data\resource_packs\skins

This way the texture pack can easily be ported over to (for example) PC edition and could be activated without buying the texture pack. Skins can easy be applied by just copying the file.

Simple way to fix this: When a texture or skin pack is purchased, the texture or skin pack will we downloaded to your device.