just pay the (?) 10% non-EU tarriff for all non-EU imports to EU.
No need to pay a massive annual fee for access to common market & swallow rules of free movement of labour with that, just pay the tarriff for importers to EU to ease the UK exporter-to-EU cost burden.
As for being nice to EU-non-UK citizens currently living in UK: UK could grant (?) 3 yr work permits to well-behaved EU citizens already here 6+ months, gives them time to get ILR at end of that if they want. New EU applicants to work in UK would be granted whatever time period work permits at UK govt. discretion.
British citizens living elsewhere in EU would have to get local equivalent to leave-to-remain like non EU citizens do within rest of EU.
What I mean is, could EU stop Britain from having post-Brexit policies that looked like that? And would that all work out reasonably cost-effective compared to other ways to make access to EU market affordable?