I have purchased a number of valves from them over the years, and I always try to buy direct because I know each penny counts when you're running a small business. On top of that, Andy and crew are some of the nicest people you'll meet, and they do try very hard. Like all of us, they are very busy trying to make a living and also juggle personal issues. I'd encourage people to give them a little patience on orders. I look at it like these planes all take us a long time to build - and it's not like an extra week or two will cause a disaster in our lives.
I know sometimes responses are slow, but they are overseas and are a small business. They do and will get back to you sooner or later, and to me the wait is worth it - they make the best fuel valve money can buy. I just had them make me a special valve with additional tanks, 1/2" fuel lines and banjo fittings with a long extension on it for my Mullicoupe, and let me tell you the wait was well worth it! As with all the other fuel valves I've had from them it is first rate.
I could care less if it is $2.00 less from one place or another on a unit that cost that much money. If it were a commodity that was being sold by dozens of retailers it'd be worth shopping around, but in this case it's well worth it to me for Andy to get that few extra bucks. Lord knows he's not getting rich in this business and I know as a person with a small business myself that the business is truly appreciated.
Anyway, I'm not tied to them in a business way at all, so this is just me as a homebuilder talking here.
Cheers,
Stein