Based on the initial cost estimate, usually signed at the company’s location or on the Internet.
You are welcome to visit the headquarters of "Karo" Okna Drewniane in Stawiguda near Olsztyn to sign a contract based on the initial cost estimate ("P"). The contract is explained in detail and the emphasis is put on issues related to measurements (discussing the measurement list, level “0”, etc.). Explaining that the parameters of the woodwork, which are tentatively entered in the contract, can be changed, and entering the rule of price change in preparing the final valuation (...). This procedure is a result of over 30 years of experience and it has been constantly proving its effectiveness, because the possibility of making amendments in a contract after it has been signed is certainly convenient for a customer. Therefore, a contract stipulates that the woodwork finally made will be that specified in detail when measurements were taken, and not necessarily that for which the initial cost estimate was made. Changes are made in each contract and they can usually cause the price to increase or decrease. Discussing the measurement list and reviewing the major issues concerning the woodwork will save everyone 1-2 hours when measurements are being taken... More at KARO.