Others are better placed to comment on pricing etc as we bought ours some time ago, but bits to note from my experience of a MY17 T8:
1) Extras really worth having, in that I find them seriously additive and wouldn’t have another one without: air suspension / 360-degree parking camera / BLIS / Winter Pack. YMMV, obv, but I really love the comfort of soft suspension on horrible London roads, and the stability of stiffer springs when proceeding at pace.
2) Software problems should be ironed out now as long as it’s had all the necessary updates from the dealer
3) Ours does similar mileage to yours (it’s a 66-plate, I’ve driven it since January 2017 and it’s just over 28k miles) and because most of that is urban, the hybrid system really makes a lot of sense; I can go from one week to the next and not use any petrol at all, since most of my journeys are 5-10 miles and done on battery.
4) I’ve noticed no degradation in battery charging, range or performance over the time I’ve driven the car. It’s worse when the weather is very cold or very hot (because chemistry) and gives you a lot more range in “Pure” driving mode than “hybrid” because the hotel load is much lower - economy air-con etc., etc. - but compared with (say) a phone battery it appears to be doing very well.
5) Whatever you do, don’t accidentally drive over the plug-in charge cable supplied with the car. It took a bit of fault-finding before I worked out why the thing wasn’t charging when plugged in…!
[Edit - 6) keep an eye on dealer special offers - they often have the Polestar upgrade on offer (I paid less than £500) and IMO it’s really worthwhile. No impact on my insurance premium either, since the bhp increase is below 10%
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