OK, I did see some problems with the search. It seems to run on OR rather than AND logic, hence adding search items broadens the search rather than restricting it. It might be possible to circumvent that, not sure. I like the filters (which seem to be missing from Hattons), so I can remove the chaff (wrong gauge, etc.), it it's not totally intuitive.
But the thing that stuck me in the end was the postage. This is not given upfront (unlike many other sites). You give your Paypal details, and then they add the postage afterwards. And it's how much???? Fortunately, the refund process was pretty painless! But I should expect to know what the final cost will be before signing off. Once bitten...