No I have never thought of that, where would be best to look, is a burr grinder the one to look for
Yes as Raymond said a conical burr is the one to go for. A blade is just about the worse thing for a consistent grind.
I can't recommend what we have enough, a Sage Barista Express. Don't get me wrong there is better but its a much more plug and play set up than most. We got ours on eBay, idoodirect is the seller. They are the only authorised sage refurber.
https://www.ebay.co.uk/itm/393212182072?epid=21014331199&hash=item5b8d45be38:g:aTUAAOSwdsxhVDJi
We paid £275 for ours from them its been over 2 years and hasn't skipped a beat. If you're not in rush wait until ebay offer 20% off again as this seller is always in that offer so you can get another £75 off that price.
At this price mark thats about the only bean to cup machine I would consider looking at. The alternative is to go separate machines, something like a Gaggia Classic with an iberital MC2.
Pros to this route are; better set up, cheaper to fix, easier to upgrade down the line as you can upgrade 1 machine at a time.
Cons; Much less forgiving, steeper learning curve, more manual coffee production and the aesthetic of standalone machines in this budget are not to my taste which was our main reason for going bean to cup
EDIT: If you really want to learn about it all and do everything properly coffeforums is a great forum, they also have a classifieds section