Where to get replacement 14mm gold buckle?

Hello,

I'm trying to source a replacement 14mm buckle with similar style to the below image (but in yellow gold as apposed to the rose gold shown) to suit a vintage watch as I just can't justify the price the OEM was asking for a replacement genuine one.

Ideally I'd like to find a reasonably priced 18K yellow gold buckle to be in keeping with the original watch but in the short term I may consider a cheap gold plated buckle also.

Can anyone offer any advice on where would be a good place to enquire about such an item, either online or from a jewelers?

Thanks,
Fran