a convention where displayed goods can be bought immediately

meeting, gathering / society, association, club

selling on the spot

to sell on the spot

to sell

to sell something (to agree to transfer goods) / to sell someone out, to betray / to agitate, to incite

selling / selling point / (stock market) sell order

oneself / first-person pronoun: I, me (often shows the speaker's lower position in a hierarchy than the addressee) / (Kansai) you

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend