For the price of labour you could probably buy the opening tool and do it yourself ;)
Second hands are easy enough to re-attach if you have decent light... there are proper tools available, but I just use a cocktail stick or something with a tiny amount of blu-tack on it to move the hand in to position and drop it in to place. Sometimes I have to wear my silly illuminated and magnifying goggles, but all it takes is a steady hand.