Which claims made by whole-house customization salespeople should not be trusted?

You had better be wary of these lines from salespeople. "Zero add-ons" and "one fixed price, all inclusive" — first ask whether hardware, worktop cutouts, and removal of existing cabinets are included; "if you don't decide today, the price goes up tomorrow" — that is a pressure tactic, so instead have them put the board environmental grade and edge banding process into the contract; "we have every kind of board" — get specific about particle board, plywood, eco board, and OSB, environmental grades HENF, ENF, E0, FAS, and F4 star, and door panels in double-faced finish, PET, vacuum-formed, lacquered, and real wood veneer, all of which must be put in writing. Custom kitchen cabinets are priced by linear metre: basic configuration E0 particle board cabinet body + PET door panel in Beijing is 900–1,000 yuan/linear metre; mainstream configuration ENF particle board cabinet body + PET door panel in Beijing is 1,020–1,250 yuan/linear metre; upgraded configuration ENF eco board cabinet body + PET door panel in Beijing is 1,300–1,650 yuan/linear metre. The above are reference prices and do not constitute a formal quotation; actual projects require further calculation based on dimensions, design, materials, hardware, quantity, and site conditions.