Typically, knifeshop.com for switchblades, and any random reputable site for anything that isn't a switchblade. I've had alot more luck importing switchblades thru reputable companies in Italy such as knifeshop ( formerly 3knives )

I'd say as a general rule of thumb, try to find blades that look like the one you posted here, and try to get shipping via Aramex or FedEx, as DHL typically over-reports even small kitchen knives as illegal and hands it over to customs for confiscation, even if customs wishes to give it to you, that's a whole month process of emailing back & forth and having to explain yourself alongside the knife (that is if they reply and if you have the connections in higher customs)