I have had a Juicy Classic for a couple of months now and I must say I'd recommend it to anyone wanting a step through bike. She climbs hills like there is no tomorrow and unusually, the Juicy company give you the option to increase the battery capacity in increments to suit the mileage that you intend to do.
If you are only doing 8 miles daily, the standard 10ah battery will do you fine. Here is the link:
https://www.juicybike.co.uk/electric-bikes/classic-click-dutch-style-electric-bicycle
That'll be well within your budget as well and a good choice of colours.
I'm willing to bet that you'll end up riding it for leisure as well as your commute 'cos you'll love it so much, but the Juicy will do 3 or 4 days on your commute without a charge.
The Juicy looks good with it's swan like frame and seems to me to be well put together - the join welds are really neat for example. Let me know if you need anymore info' about it, or better still speak to Bob (he has already responded to you under the Juicy bike logo above, but was far too polite to include a link to his business within the body of his post
).
I have no connection with the business - just a very satisfied customer.