I'm looking for a 125i specifically which are.. rare...finding them in the right colour with heated leather , pro hu, front and rear pdc and idrive is nigh on impossible...
I can't find all those options together in my budget and those that have most end up having bad service history or from Bradford or something.
I'm not barrel scraping my budget is 8-8.5k
The upside is that BMW a have a wide community of retrofitters and everything you mentioned there can be easily installed afterwards, whereas a colour change done to a decent standard costs a lot more and will raise certain alarm bells when you sell it on later.
I'm sure leather heated seats can be found on ebay, and Idrive swaps have been done a million times now. Same as PDC retrofits.
In an ideal world, you'd wait for the perfect one from the factory, but when buying second hand one has to make the odd concession or make a bit of effort.