GET statistics about a product...

/api/v2/products/:sku/stats
/api/v2/products/:sku/stats.xml

For example...

<?xml version="1.0" encoding="UTF-8"?>
<product>
    <id>0001</id>
    <sku>0001</sku>
    <price type="float">0.01</price>
    <currency>USD</currency>
    <download_count>14</download_count>
    <order_count>14</order_count>
</product>