I don't check the prices frequentyl, but here's 1000 for $20: http://www.ebay.com/itm/1000-Facebook-Likes-to-your-WebSite-...

I've seen better deals than this within the last month. I don't use this sort of service BTW, I just did some research into it because I like electronic dance music and I've heard that audience-renting is rampant right now; it's easier to just buy your way into the charts than market a tune/perfmormer organically.

Black hat world, fiverr, although the price is a little higher than 10000/$10 if you want US.

Not an endorsement, just info for those who are curious and a warning that numbers aren't necessarily real.