trololololol

* window alert and confirm overrides
* purchases upgrades first
* purchases more expensive products when more than one is available

![BAKING INTENSIFIES](https://gs1.wac.edgecastcdn.net/8019B6/data.tumblr.com/a0d79d5e67730a7d0e7a64375fe3d8c4/tumblr_inline_msorugkgZq1qz4rgp.gif)