Cave Painting Australian Aboriginal Art

What sells better, Oil Painting on canvas or acrylic paintings on canvas?

Can anybody help me with a review on the comparison of canvas paintings between Oil & Acrylic paints?
Thanks.

c both r good……
but i guess
Oil Painting on canvas………

http://www.bikudo.com/photo_stock/97344.jpg

n image of an acrylic painting on canvas

http://media1.in.88db.com/del/DB88UploadFiles/2009/05/08/C87C7434-E278-4679-9A2A-190C08537FA3.jpg

Giclee Canvas Prints

[affmage source="ebay" results="10"]canvas paintings[/affmage]