Yes the laws are different all around the world when it comes to privacy, data collection etc., and there are plenty of legitimate businesses out there renting lists of people and businesses that want regular newsletters, updates, product offers etc.
A good active list rents for one time only use and it is seeded (they don't sell) will start off around $250/1,000 emails and go upwards from that depending on what target market you are after.
There are lots of web based businesses out there 'selling' and renting lists of 5,10,20,100k and beyond for exceedingly low prices but these will not be verified, you will have huge bounces and big scam rejections as they will old generic lists that were scraped from the web and spammed by all and sundry.
The first 5 to 8 days are the most crucial for crowdfunding, so if you can build up interest and followers as much as possible before you launch you'll have a better chance of success.