What "buying a vowel" contains, appropriately

• Things purchased from Pat Sajak
• Lttrs tkn frm ths cl
• Group to which the Y is often linked?
• Quintet followed by "... and sometimes Y"
• "Wheel of Fortune" purchases
• Bit of kindergarten learning
• Gang of characters seen in the four longest answers
• Fundamentals of speech
• Abstemious quintet?

Wikipedia Word definitions in Wikipedia
' AEIOU ' is a 1979 Czechoslovak film. The film starred Josef Kemr .