Here's a test I have in process.  I bought an old $5 closeout domain from Godaddy TDname expired auction.  I put a quick minisite up and linked to it with a crazy anchor text phrase.  The domain is ranking for that crazy term now.  It's gone through one pagerank update and I'm waiting for a second to come.  Then I'll redirect the domain to another minisite.  I suspect the second site won't rank for the anhor text, but we'll see.  
Hey , Nice Article . Just have one query . I read your article and the issue is I want to buy one expired domain which is too good but how can I fill the reconsideration request as the domain is banned . I have not purchased the domain yet because I want to purchase it when the domain gets unbanned . So if you check – Requesting reconsideration of: which is only showing the websites I have in the account .. So how can I add the domain name there . OR first of all I have to buy the domain add in GWT and then send reconsideration request . If that is so then I guess you should have mentioned in the article I suppose ? Let me know thanks
That said, my recommended budget for beginners would be $500+. Using this budget you could buy a bunch of high-potential $10 domain names, expired/dropped domain names or a mix of both. It’s very important to invest only what you can afford to lose and treat this as a side hustle till you get the momentum going. As you gain experience, industry expertise and some sales under your belt, you can then consider slowly growing your business into a full-time gig.