Other manufacturers are available. Google is your friend.
maybe these guys would have helped...I paid last year almost 400 quid for a simple 4 cylinder head gasket to fit our Yanmar 4JH4-HTE.

The parts to repair my 2GM cylinder head came to about the same as a new Beta 20. Most of it I could do myself but would need some professional labour.I paid last year almost 400 quid for a simple 4 cylinder head gasket to fit our Yanmar 4JH4-HTE.
Here's an even better source...A lot of what you say is correct. Our engine is the 16 valve job and I was told it was only used in marine engines, not plant.
The genuine Yanmar secondary fuel filter - the one that comes with the engine - is about 56 quid from a UK Yanmar dealer. $25.00 in America. US Yanmar dealers can lose the franchise if they discount and ship out of their area. Many instances of pissed off Yanmar customers on the IPHomeport. Away cruising they have to use the nearest dealer, not the one in their home port who they know.
I get my filters from InLine filters, 12 quid plus VAT.
The all in price for our exhaust elbow, a huge cast bronze one, is 1700 quid. I got a Swedish S/S one for £360.00.
I did punt about for a cheaper source for the gasket - and the valve I needed - but nothing doing.
Had I still been working in my motorbike shop I could have had a lazer cut solid copper gasket made for far less money and made a valve myself from a high quality racing motorcycle valve. It was nothing special, stem and head similar to a Honda 125cc single. I could buy those for a fiver, shorten the stem and put the collet groove in, a blob of hard facing on the tip, job done. The Yanmar valve was 57 quid!
Thanks for the link, I shall keep it handy.
You never know!

Likewise, some 20 odd years ago and never regretted the decision.When my 2003 took to pumping its oil into the bilge I found out the cost of Volvo spares, even used spares for parts that Volvo couldn't supply. Which is why, once I accepted that it was not economically repairable and was advised to replace it with a D1-30 I chose to replace it with a Beta.
Parts4engines is fine, because they source and stock OE parts, not genuine VP parts. You wait until they don't have the bit you need.I'm sure I shall eat my words at some point but having moved from a Beta 20 to a MD2040 I've been pleasantly surprised (given the horror stories on here) with the quality and price of parts from the likes of Parts4engines.com and a quick Google (or measure) should find you the size of any o rings, seals etc you need for next to nothing
I am sure you are right but my point is that people are needlessly paying stupid prices a lot of the time. By way of an example I'd hate to think what VP would have wanted for a fuel injection pump, Parts4engines wanted £720 for a refurb, but my local diesel specialist rebuilt and tested it for less than £200. I'm definitely not advocating VP prices but there are lots of ways to ease the pain if you take the trouble to find out what the base engine is, what OE specialists there are etc. The one exception I've experienced so far (I'm sure there will be more) was the stupidly priced cone clutch in the saildrive and it was significantly cheaper to put in a complete second hand saildrive.Parts4engines is fine, because they source and stock OE parts, not genuine VP parts. You wait until they don't have the bit you need.
Original Equipment, as in Original Equipment Manufacturer. Ironically, in the automotive industry it seems to mean the opposite to what you think it means, meaning the car companies, not the companies that make the parts that go into the car.what is OE?