Sales letter

I am looking for a outstanding sales letter to be sent to climbing gyms, climbing shops and newsagents.
The letter is to sell a brand new zine that we are bringing to the UK and Europe.
The ethos of the zine can be found here,
http://www.climbingzine.com/manifesto/

The letter should entice and intrigue the reader. It will be sent with a copy of the zine.
The following should be included
- What's a zine? Brief summary of what makes a zine different
- wholesale prices are £3.75, £3.50 for orders over 200 and £3.25 for orders over 500
- retail price £5.50
Our contact details and how to get the zine ordered of your store.

Really we need an amazing letter to sell this zine in the UK. Someone who is climbing it knows that world might be good for this job, but it is open to everyone.

Thanks for looking