Wisk can be cheap at CVS this week. They are on sale for 4.99 and there is a $2 off one in the newspaper this weekend. The Wisk is also part of a promo for a free $10 gas card with a $30 purchase.
So, if you were to buy 6 Wisks and use $6 of the $2 off coupons your purchase could be as low as $17.92 plus you'll have the $10 gas card:)
There is also a $1 off coupon at Facebook if you "Like" Wisk.