If you plan to order from JG Tech, check availability first.
If it's not a stock item, you might be in for a LONG wait and/or the price might have changed since you placed your order.
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Not to sure about the 913 but Yachtbits.com were the cheapest by miles for the 504.
[/ QUOTE ]Not by the time you've added VAT, they aren't (now, at least). I bought a 504 from JGtech a few weeks ago. Ordered Wednesday evening (late) - arrived Friday morning - with normal delivery, not express. It was also about 15-20 quid cheaper than anywhere else I could find.