I'm sorry, but I have to make this comment: Is online shopping an option for you? The local pricing just sounds ridiculous when you look at other available options:
If you purchase the Blu-ray set with the three Hot Wheels vehicles, a 64-page book, and Mondo collectible art cards from Amazon.Com, it only comes out to 4,100 pesos, including standard shipping. Even if you end up having to pay customs duties of even up to 2,000 pesos, it will still be significantly cheaper than the 7500 they're asking for. And if you're lucky and don't have to pay any duties, it'll cost less than the bare bones set.
Conversely, order it from Amazon UK and including shipping, it comes out to 3,340 pesos. Even with customs duties, it will be much cheaper.