I know this is a little late in responding, but I have ordered from HPH fairly recently. The website seems to work well for ordering but the response to e-mails has been spotty.
I found two ways to contact HPH:
The first is their webmail info address: [info AT hphmodels.com]
The second is to Kateria Semberova: [semberova AT hphmodels.cz]
The only email address I could a a response from was Katerina. Once she replied everything got sorted out with my order. There seems to be two things that make replies not so good or timely according to Katerina; 1) they are a small company, 2) they have trouble with their internet and website.
When I ordered a large 1/48 scale model (B-52H), I had to agree to commit to a purchase without knowing the shipping charges. This felt a bit risky but I went ahead and did it and really it was not an issue. Shipping was reasonable for a large heavy package & international. The package arrive in very quckly and was well wrapped with a black waterproof plastic outer wrapping.
My adivce is if you have questions or need to communicate with someone about something, be prepared to send several e-mails before get a response. Once you reach Katerina, all will be well.
Interestingly, today I received an unsolicited package from HPH. It appears to be a duplicate 1/48 B-52H shipment. So, lets see how hard it is to get in touch with Karterina and get this back to them. I am not sure how it happeed, but my order was filled over four months ago. So, something must have really gone haywire with their database or stock and orders. And as much I would like to get a free B-52, I only have enough space to have one and my wife is already saying I am pushing it, hehehe.