Crossword Puzzle Cheap substitute, of sorts

Clue: Cheap substitute, of sorts

Official substitute (PROXY with 5 letters)
Where cheap parishioners put their offerings? (PLUGGEDNICKELPLATES with 19 letters)
Official in charge of sorts? (POSTMASTER with 10 letters)
Housekeeper's home renovation advice about a cheap fourposter offer? (TURNDOWNTHEBED with 14 letters)
Office holder, of sorts (DESK with 4 letters)
Pons offering (ARIA with 4 letters)
Offer support to (ABET with 4 letters)
Student officer (CLASSSECRETARY with 14 letters)
Box-office letters (SRO with 3 letters)
Shape of the president's office (OVAL with 4 letters)