Wher can I best get an maps upgrade for my 2017 a4? No replies from e Bay suppliers

Have you tried Audi?

They want over £200 which would pay for a separate sat nav with unlimited updates

 

Hello Stephen,

Can we take it you cover a fair amount of unknown territory on a regular basis, and are getting into difficulties because major roads have changed over the last 7 years? 
Can’t get potholes repaired in these parts, leave alone get any new road developments! 

111000 miles to date

Thanks Stephen, but that doesn’t tell me anything about how often you travel into unknown territory, so we can work out how much of an inconvenience your current unupdated system is to you.

4 hours ago, stepheh said:

They want over £200 which would pay for a separate sat nav with unlimited updates

I don't doubt it. It was the reason I bought a Garmin several years ago. It was cheaper than an update by the dealer and came with lifetime updates.