My modded gaggia baby class on the left, My cheap amazon black friday deal Gaggia "black" baby from last year on the right which now resides at a friends house and my Kitchenaid burr grinder skulking behind them.
The gaggia is a perfectly decent machine and can produce just as good an espresso as machines costing many times more, they do have one noticeable problem and that is the very small solenoid valves that can become blocked with teeny bits of scale or suchlike but it's a simple procedure to dismantle the machines and clear them out as the solenoid valve is attached to the base of the boiler/brew unit by two 4mm hex head bolts - a simple procedure to poke them clean and refit.
You can adjust the pressure regulator to the grouphead so you get a genuine 11 to 13 bar of pressure, someone on this forum had a grouphead modded basket with a pressure gauge attached to do just this very job and it was doing the rounds of stw'ers a few months previous.
My Kitchenaid grinder is perfectly adequate for my needs and it has 14 stages of grind adjust from course to espresso fine, needless to say i've taken the grind adjust apart and slightly adjusted it so i get a very fine grind so i don't need to tamp down on the espresso grounds/puck as hard.
If you just want a machine for work use then an Aeropress sounds ideal for your needs as others above have mentioned, i'd be quite happy using one for work with decent/freshly ground beans as supermarket pre ground coffee is all rank in my opinion.
My Gaggia Baby class was £100 2nd hand, since having it (3 years) i've replaced the steam wand and fitted a new pump and grouphead gasket, the baby class (black one) was £100 from amazon last year on black friday but i prefer my aluminium and stainless steel body on my Baby class machine so the black machine was given to a friend for her xmas last year, the burr grinder was £150ish and is just as if not more important than the espresso machine.
You can get a decent burr hand grinder similar to a a pepper mill for approx £30 from some coffee websites and there's no need to spend £100's on a machine either.