Omega Railmaster (220.10.40.20.01.001)

I own a 2019 Omega Railmaster (220.10.40.20.01.001), pictured here:

I'm after the OEM Omega fabric strap and buckle, part code CWZ007427, pictured here:


My questions are:
1. Given the watch is discontinued, can I still purchase the strap from Omega?
2. How much does it cost? (I'm based in the UK)
3. Is there any good websites where this can be purchased second-hand? (I've tried C24 and eBay, with no luck).
4. People who own this strap, does it hold up long term?

Thanks for any help.

£270 is both less than I thought it would be, and more than I think is reasonable 😂

And yes, I tried Google first, but nothing. I'll give my AD a call.