פירוש על קידושין 13:8

This refers back to what Rava taught in yesterday’s section. All of the strange ways that Rava said betrothal can work, can also work for selling a field.

The Talmud now asks why we need to know that these roundabout means of acquisition work for both betrothal and sales.
If we had said that they work for betrothal, it might have been because the Talmud assumes that women would prefer to be married to unmarried. Thus we might have said that a woman allows herself to be betrothed even though she receives no benefit. But when it comes to selling a field, I would have said that this is not true. The seller must receive benefit for the sale to be valid. Therefore, Rava says that the same is true with regard to selling.
Resh Lakish’s statement appears several times in the Talmud and has, on occasion, been used to assume that a woman would prefer a bad marriage over no marriage. However, this is not necessarily the original meaning. It might just mean that she prefers to be married in general, but not if the marriage is bad.