Building on Sarah's comment: Family Tree DNA generally has a sale on their mtDNA tests around Mother's Day. You should check their website starting at the beginning of May.
Deborah Blankenberg (JewishGen ID #613395)
Researching BLOCH/BLOCK (Germany to New York, Colombia and Missouri), BLINDER (Kishinev to New York via Poland? and Paris), KUSHER/KUSZER (Lodz vicinity to New York via Paris), GOLDSCHMIDT (Germany)