Newegg has the "standard" HT speakers on sale for this weekend only.
M70's on sale for $149.99 using the promo code EMCJJJJ25;
PSW505 for $179.99 using EMCJJJJ36
CS2 for $99.99 using EMCJJJJ52
M40's for $99 using EMCJJJJ37
All of these prices are just for the black though. It says in my mailer that its a secret thing, but after going to the site it looks like they've listed all the codes on the product pages themselves.