Go to the store (buy materials/parts)

Shopping for materials — 500 CZK. The technician goes to the shop, buys the agreed parts, and their cost is added against the receipt. It is ordered when you do not know exactly what to buy, or have no time for it. It pays off most with parts where the wrong size is easy to buy: lock cylinders, supply hoses, fixings for a particular substrate. Returning a wrong part means a second trip and a second appointment. For bulbs and ordinary plugs, buying them yourself is quicker.