Welcome to the site. As a fellow relatively new member, I've learned from the wisdom of the group, and would definitely advise a lot of lurking before actual purchasing. Based on your intro, buying $50 a month worth of sets won't return the short term gains you would like unless you're extremely lucky. Definitely start saving that money, but don't deploy it unless a "sure thing" comes along. Quick flipping is tough business, and margins are often slim. Fees are high on eBay (13-20% depending whether you pay for shipping and have cheap shipping materials), and selling through other avenues may take longer or have fewer customers. You also missed the prime holiday sellling season, which is unfortunate. Make sure to do your research before buying sets; look up the all time lowest prices and try to make sure you won't be undercut on pricing. Look on Bricklink or other sites for the minifig values and see what a worst care scenario part out might return. Stalk Craigslist for bulk lots on the cheap and try to put together used sets. You can lick into short term success here, but as an admitted newbie like myself a few short months ago, I would definitely advise a "measure twice , cut once approach". Good luck!