Cheapest SACDs?

SACDs purchased online now seem to be about $18 plus $5 shipping. Does anyone know of a cheaper website?

That is not always the case. I think it's only the Sony's that go for that price.

A few sites to check are: (click on "Super Audio Discs" on the left menu) (the left menu also has a SACD section)

Lenardd, thanks for the SACD sites. I'm more interested in the Sonys for the classical releases. The HMV's prices were $19 and up, Elusive's were $18, Super Audio had a limited selection and were expensive, and Acoustic Sound's were $18. I guess the medium's too new for deeper discounts--maybe the best bet is used on eBay. $18 for a new single-layered SACD isn't bad, but not with a $5 shipping charge.
Make sure the HMV price quote was in US dollars. For a while they had huge discounts with the dollar conversion. I know they change that about six months ago but it may be worth checking again.