Uniform EBook Pricing

I have a query regarding the uniformity of ebook pricing.

I am not sure of the commission deducted by Amazon for selling an 
EBook - I have gathered from reading some other posts that it can be 
up to 60% commission. So I have a few queries;
 - Is there a fairly standard commission applied to ebook sales from 
Amazon, ie how much do they charge the author for the priviledge of 
using their forum
 - What are the other main retail ebook sites and their approximate 
commissions
 - Does Amazon (and others) prevent you from selling your Ebook on 
your own site for a lesser rate? That is to say, if you place your 
Ebook on Amazon @ say, $24.00, can you then sell it on your site (or 
others) at a lesser rate, eg $16.00

Thanks in advance for your feedback

Kevyn


------------------------------------

------------------------------------------------------
Post a message:   ebook-community [[at]] *
Unsubscribe:      ebook-community-unsubscribe [[at]] *
Switch to digest: ebook-community-digest [[at]] *
Switch to normal: ebook-community-normal [[at]] *
Put mail on hold: ebook-community-nomail [[at]] *
Administrator:    ebook-community-owner [[at]] *

(* == yahoogroups.com)
-------------------------------------------------------Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/ebook-community/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/ebook-community/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:[email protected] 
    mailto:ebook-community-fullfeatured-hHKSG33TihhbjbujkaE4pw@public.gmane.org

<*> To unsubscribe from this group, send an email to:
    ebook-community-unsubscribe-hHKSG33TihhbjbujkaE4pw@public.gmane.org

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/