I love this so much; it is goofy and silly and low-budget and janky animations but SOOOO much <3
The trailers alone are pure glorious entertainment. Awesome! ^_^
That said, it may be in your best interest to remove the dropbox link and put it inside a text file or something that comes with the purchase ;)
Also might be useful to put a password on the file if you haven't already done so. Honestly I'd recommend re-compressing the files in 7-zip format instead of RAR format. RAR is proprietary/patent trash and it doesn't even compress as well as 7-zip does.
Here's a quick image of the settings I use for 7-zip. You can search '7-zip portable' and grab it from portableapps if you don't want to install it.
I wish you the best of luck with your game and hope you make lots of sales/money to make a sequel! ^_^