Sentence:  Such a man emphatically deserves the name of fortune-hunter—a wretch as detestable in society, as destructive of domestic happiness! And if, when marriages are consummated on such plans, there be afterwards between the parties the least appearance of regard, and the common forms of decorum, it is more than can reasonably be expected, and infinitely more than such <WSD>mercenaries</WSD> deserve. 
Meaning of the word marked with <WSD> tags:  One motivated by gain, especially monetary.