Love is a force of nature. However much we may want to, we can not command, demand, or disappear love, any more than we can command the moon and the stars and the wind and the rain to come and go according to our whims. We may have some limited ability to change the weather, but we do so at the risk of upsetting an ecological balance we don't fully understand. Similarly, we can stage a seduction or mount a courtship, but the result is more likely to be infatuation, or two illusions dancing together, than love.
Love is bigger than you are. You can invite love, but you cannot dictate how, when, and where love expresses itself. You can choose to surrender to love, or not, but in the end love strikes like lightening, unpredictable and irrefutable. You can even find yourself loving people you don't like at all. Love does not come with conditions, stipulations, addendums, or codes. Like the sun, love radiates independently of our fears and desires.
Love is inherently free. It cannot be bought, sold, or traded. You cannot make someone love you, nor can you prevent it, for any amount of money. Love cannot be imprisoned nor can it be legislated. Love is not a substance, not a commodity, nor even a marketable power source. Love has no territory, no borders, no quantifiable mass or energy output.
One can buy sex partners and even marriage partners. Marriage is a matter for the law, for rules and courts and property rights. In the past the marriage price, or dowry, and in the present alimony and the pre-nuptial agreement, make it clear that marriage is all about contracts. But as we all know, marriages, whether arranged or not, may have little enough to do with love.
Sexual stimulation and gratification, whether by way of fingers, mouths, objects, fantasy play, whips and chains, or just plain intercourse, can certainly be bought and sold, not to mention used to sell other things. Whether sex should be for sale is another question entirely, but...