every now and then some new legit sellers will pop up on FB groups and offer to do editorial links for super cheap in exchange for a review. You have to be a little cautious , though.
other than that this guy is pretty cheap http://kickasslinks.net/ and does great work .
All this domain authority stacking and PR bs wouldn't actually help you rank . Invest in a niche PBN , get editorials and use established agencies whose outreach method is in place like ddasilva said
That being said , I have always seen a positive trend when I do citations for sites . Local /...
What if someone , who doesn't like you selling domains , grabs all the domains and runs a chinese anchored guestbook blast on all of them rendering them useless ?
I have been doing ORM for years and for all sorts of people. PM/Skype me if you want me to take a look .Really wouldn't mind offering some actionable advice
Grab Scrapebox , scrape niche related targets and start dropping niche comments.Tier 2 it with more blog comments and trackbacks.I think thats the cheapest you can start of with .Scrapebox is the swiss army knife of someone who wants to build links