i've recently got myself into a lot more intense trail riding than i expect of my myself or my bike, and i've been thinking i need to get myslef some clipless pedals

the problem is the local bike shop is charging prices strictly in the range of extortion, especialy for the labour of installing both the new pedals and the cleat into the shoes

so im wondering if i could save huge amounts of money by ordering the pedals and shoes online(get the ones i want cheaper) and install them myslef, is this a difficult procedure or is it so easy im wasting my time worrying about this?