Cost new back door and single window replaced?

mrcol1000

So how much would it cost to replace a standard back door with a yale lock with a more secure one. Maybe a PVC one? Also replace a single window that is single glazed and just asking to be smashed and someone break in with a nice more secure double glazed one? The window is about 2m x 1m in size. Its over a kitchen sink.
Would rather someone fit this than attempt myself. Anyone know the rough cost so I can have a rough idea rather than enquire with a double glazing company and be rang by them every night for the next 3 months.
Also would it be better to get them both from the same company or different companies? Anyone know anyone cheap, reliable but decent in the North? Thanks.

ormus

new back door fitted, about 300/600 quid.
complete new window about 400 quid. just replace the glass (ie laminate) 40/100 quid.