You can use http://ebay.timkilian.pl/api/ or host it yourself.
/search?s=product search a product on ebay
/item/{id} get specific product information
s={input} search for input
location=(ebay|region|continental|global) search in prefered location
buynow=(true|false) active buynow
auction=(true|false) active auction
sold=(true|false) search in sold products
order=(best|soonest|fewest|most|nearest|newly|lowest|highest) active order by options
MIT