I just wrote my first post discussing domain names and SEO.  

SEO will run you $750-$1500 a month for a legit company.

Just make sure that site is seo friendly and is optimized for your entire market.

I hopefully get someone to build my own. and maintain the SEO work ...

Those give me a high volume of incoming leads however a small percentage are motivated sellers.I also do penny saver adds with we buy house, those are being evaluated as well because I get a lot of calls from rural areas with folks looking to dump junk trailors and I politely turn those down.I am in search of sub2 deals and I also use word of mouth from relationships with homeowners, if I cant get an option on the homes I pass them to my wife who takes the owner finance listing.Finally I do a craigslist campaign for owner finance buyers, this keeps the phones ringing as well but many buyers are unloyal and seem to be fishing for something for nothing however I keep a steady flow to choose from I just need to get just as many homes to sell to them owner finance.I am curious to find out a ball park figure most spend on direct mail, SEO search engine optimization and other techniques mention in this thread.I really feel that relationship building is the key ingredient and if I can hangout with bankers then I think my network will = my networth.

When you build a website for your real estate business, if the local MLS will allow you to have IDX on your website, it can be great for SEO purposes when done properly.

I prefer to have a typed letter with a handwritten outside envelope.I have a business card inside the envelope.I target sellers in commercial real estate.Some like using the giant corps with the robots and others like a personal level of service and to feel like a valued client.There is plenty of opportunities to go around for everyone.I think mailers that are targeted are worth a ton in return for the money.Nobody mails anything anymore.My best returns are SEO and forum posts (time in) and my mailers (time and money).

I mean, a decent site anyway with any kind of SEO built into it, plus optimised for adword advertising, etc.

Bigger Pockets gets excellent SEO at least for me.

Lastly you need to do some both on page and off page SEO.