Replacement of driver's door

I have seen a complete assembly driver's door for sale on Ebay for reasonable money.

I was wondering how much work it is to replace a complete door as an assembly, that is with hopefully the window working etc.

I replaced a door years ago (with a complete door from a scrapper) and it was a doddle (before cars had electric everything).

Also, how heavy is a modern complete door assembly? I notice some sellers appear to offer click and collect, may be too heavy though to pick up?

Roomster 1.2 2008.