I think you are underestimating the percentage of men, particularly in the U.S., that will avoid a woman who clearly wants to get pregnant for reasons other than love.
Child support payments are no joking matter.
On the other hand, if she offers BBFS full service for $200 extra every day to four customers, and two accept, the pregnancy odds are pretty good. And many days those two who accepted the offer would have declined free sex from her in civilian life if she knew his real name and cell phone number.
And the civilian guy might, or might not, marry her. Especially if her English is iffy. If she can imply rape or sexual assault at the massage parlor, that might get more sympathy from Immigration. She won’t happen to mention the $200 extra.
There is a lot of stereotyping of Asian/immigrant ladies and bbfs, let me bust a couple stereotypes.If an Asian immigrant wants to get pregnant she does not need to be a sex worker to do so. In fact, most women who get pregnant are not sex workers…even Asian immigrants!
The idea that some poor sp's want to get pregnant from johns who may never be seen again is just paranoia.
I recall 5 caucasian Canadian girls who offered it in the past and not so distant past
(one was Russian therefore not old-stock Canadian)
the price ranging from zero to prohibitive, pussyslide was available when I started hobbying decades ago
and long before the Asian influx, and don't mention cum or ps to many Latinas and other nationalites
unless you fancy getting insulted, spit on or bitch slapped (our friend rocco_s would pay for that lol)