@Neil Sinha I can only speak for my own market and own volume.
I would never waste time meeting with someone before discussing price. Truth is, I've spoken with sellers that are insanely motivated - back taxes, house is a wreck, needs to move for health reasons. But, they get a number in your head, and are stuck with it.
Also - you can't necessarily wait for a sit down meeting. In some cases, using a service like "Docusign" will yield better results. If you can get a contract out, reviewed, and signed in a few hours (this just happened to me) it can be better than going in person.
That said, I've gone in person lots of times and it has a positive impact. However, you just need to make sure the seller is appropriately motivated at a "ball park" price and then you can firm up numbers and even bring a contract over with you.
Also - don't sleep on starting a website. Seems like you're getting pretty hung up on the nitty-gritty of direct-mail details. I've never found modifying a sentence or two is going to change anything. I have my envelopes hand-written - that will make people open it. Also - use a return address label the first time to get the "return to sender." I think that's really all your looking for if you're going the letter route. I only use letters for probate/estates, for other stuff, I just want volume to find that motivated seed out there - so I go postcards. Not trying to play mind games to get someone to pick up the phone.
Direct-mail is about volume, weeding through the huge amount of bad leads you can, focusing on the good ones, and following up regularly to make sure you are there when the day comes.
DEFINITELY don't sleep on a motivated seller website. Leads are just better - plain and simple. It's also can be much cheaper if you plan everything our correctly. SEO - time consuming - but free. Google Adwords tighten it up with your keywords - and you can compete with the big boys even with only $500-$1,000 a mo.