搭售

搭售	dā shòu	to sell an item only as part of a bundle (thereby forcing consumers to buy goods they do not want); to sell on a tie-in basis
搭	dā	to put up / to build (scaffolding) / to hang (clothes on a pole) / to connect / to join / to arrange in pairs / to match / to add / to throw in (resources) / to take (boat, train) / variant of 褡
售	shòu	(bound form) to sell; to retail / (literary) to carry out (a plan or intrigue etc)