SeedLegals Partnerships in London, worth it?

Hi All. In the UK, a business named SeedLegals (similar to Clerky + Stripe Atlas) offers a paid program for select businesses to 'advertise' offers to their 75,000 users (businesses who incorporated or manage cap table via them). It's a significant investment just to be on their Perks page and significantly more to get coverage in their webinars, newslettters or events. We're a very young API/Model provider. Is it it worth paying SeedLegals to break into the UK market? If you're a UK statup do you ever use SeedLegals Perks? Their founder is a rockstar for whom I have the greatest respect (he invented BBC iPlayer and is generally just a very honest nice guy but SeedLegals is a lot bigger than just him now so sanity checking). Thanks in advance.