The letter I put together has given me great results so far its amazing about 15% call back rate which i hear is really good most people get about a 1-2 % call back rate on postcards.

If you can do nothing else, I like postcards (due to the lower cost) delivered monthly at least 7 times (we call that the "rule of 7").  

On postcards and typed letters it is fine however on a Yellow Letter I wouldn't.The biggest issue is that not all of the google pics are worthy enough to be printed...

But the full campaign is $4,250 with 3 letters and 2 post cards 1 letter/post card a month.

When I caught the mistake, the sales guy over there told me that the issue had already been corrected before the postcards were sent out. 

I’m intending to split test yellow letters and postcards to begin (currently considering Yellow Letter Complete), mailing every 3 weeks before settling on the more successful after 12 weeks.

- Do you use postcards instead?

When I mail postcards, I've had people ask me to remove them from my list.

No worries.I spend about a $1 a letter (envelope, paper, ink, stamp, labor) and about $0.50 a post card (printing, stamp)About how much are they charging to get 65,000 postcards out?

Plus I like the tiered approach of RVM to Cold Call to letter/postcard !