He was not a limited figure, but because he's a male figure, he's quite rare and expensive these days.
I recommend you periodically browse Mandarake (http://ekizo.mandarake.co.jp/shop/en/), which is a chain based in Japan that sells second-hand figures and doujinshi, mainly. The site is updated daily with new stuff and comes on a first-come, first-serve basis. They usually have better prices compared to eBay, but rarer and older figures like this will still cost you some money.
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I recommend you periodically browse Mandarake (http://ekizo.mandarake.co.jp/shop/en/), which is a chain based in Japan that sells second-hand figures and doujinshi, mainly. The site is updated daily with new stuff and comes on a first-come, first-serve basis. They usually have better prices compared to eBay, but rarer and older figures like this will still cost you some money.